diff --git a/ANNOUNCE b/ANNOUNCE
index 863788e..67992f1 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,82 +1,56 @@
 
-Libpng 1.0.23rc5 - December 29, 2006
+Libpng 1.0.23 - January 5, 2007
 
-This is not intended to be a public release.  It will be replaced
-within a few weeks by a public version or by another test version.
+This is a public release of libpng, intended for use in production codes.
 
 Files available for download:
 
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.0.23rc5.tar.gz
-   libpng-1.0.23rc5.tar.bz2
+   libpng-1.0.23.tar.gz
+   libpng-1.0.23.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   libpng-1.0.23rc5-no-config.tar.gz
-   libpng-1.0.23rc5-no-config.tar.bz2
+   libpng-1.0.23-no-config.tar.gz
+   libpng-1.0.23-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1023r05.zip
-   lp1023r05.tar.bz2
+   lpng1023.zip
+   lpng1023.tar.bz2
 
 Project files
 
-   libpng-1.0.23rc5-project-netware.zip
-   libpng-1.0.23rc5-project-wince.zip
+   libpng-1.0.23-project-netware.zip
+   libpng-1.0.23-project-wince.zip
 
 Other information:
 
-   libpng-1.0.23rc5-README.txt
-   libpng-1.0.23rc5-KNOWNBUGS.txt
-   libpng-1.0.23rc5-LICENSE.txt
-   libpng-1.0.23rc5-Y2K-compliance.txt
+   libpng-1.0.23-README.txt
+   libpng-1.0.23-KNOWNBUGS.txt
+   libpng-1.0.23-LICENSE.txt
+   libpng-1.0.23-Y2K-compliance.txt
 
 Changes since the last public release (1.0.22):
 
-version 1.2.15beta1 [December 3, 2006]
+version 1.0.23 [January 5, 2007]
+
   Generated configure with autoconf-2.61 instead of 2.60
   Revised configure.ac to update libpng.pc and libpng-config.
-
-version 1.2.15beta2 [December 3, 2006]
   Always export MMX asm functions, just stubs if not building pnggccrd.c
-
-version 1.2.15beta3 [December 4, 2006]
   Add "png_bytep" typecast to profile while calculating length in pngwutil.c
-
-version 1.2.15beta4 [December 7, 2006]
   Added scripts/CMakeLists.txt
   Changed PNG_NO_ASSEMBLER_CODE to PNG_NO_MMX_CODE in scripts, like 1.4.0beta
-
-version 1.2.15beta5 [December 7, 2996]
-  Changed some instances of PNG_ASSEMBLER_* to PNG_MMX_* in pnggccrd.c
-  Revised scripts/CMakeLists.txt
-
-version 1.2.15beta6 [December 13, 2006]
-  Revised scripts/CMakeLists.txt and configure.ac
-
-version 1.2.15rc1 [December 18, 2006]
-  Revised scripts/CMakeLists.txt
-
-version 1.2.15rc2 [December 21, 2006]
   Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers.
   Added scripts/makefile.nommx
-
-version 1.2.15rc3 [December 25, 2006]
-  Fixed shared library numbering error that was intruduced in 1.2.15beta6.
-
-version 1.2.15rc4 [December 27, 2006]
   Fixed handling of rgb_to_gray when png_ptr->color.gray isn't set.
-
-version 1.2.15rc5 [December 29, 2006]
-  Revised handling of rgb_to_gray.
+  Added some (unsigned long) typecasts in pngtest.c to avoid printing errors.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
-
 (subscription required; visit 
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
 to subscribe) or to glennrp at users.sourceforge.net
diff --git a/CHANGES b/CHANGES
index 818d2e2..63ed565 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1663,9 +1663,12 @@
 version 1.2.15rc4 [December 27, 2006]
   Fixed handling of rgb_to_gray when png_ptr->color.gray isn't set.
 
-version 1.2.15rc5 [December 29, 2006]
+version 1.2.15rc5 [December 31, 2006]
   Revised handling of rgb_to_gray.
 
+version 1.2.15 [January 5, 2007]
+  Added some (unsigned long) typecasts in pngtest.c to avoid printing errors.
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
diff --git a/INSTALL b/INSTALL
index a79ef96..709c05b 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.0.23rc5 - December 29, 2006
+Installing libpng version 1.0.23 - January 5, 2007
 
 On Unix/Linux and similar systems, you can simply type
 
@@ -44,7 +44,7 @@
 correspond to the version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.0.23rc5" or "lpng109" and "zlib-1.2.1"
+might be called "libpng-1.0.23" or "lpng109" and "zlib-1.2.1"
 or "zlib121") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -101,14 +101,14 @@
  CMakeLists.txt    =>  "cmake" script
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng10.so.0.1.0.23rc5)
+                       gcc, creates libpng10.so.0.1.0.23)
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng10.so.0.1.0.23rc5)
+                       (gcc, creates libpng10.so.0.1.0.23)
  makefile.gcmmx    =>  Linux/ELF makefile
-                       (gcc, creates libpng10.so.0.1.0.23rc5,
+                       (gcc, creates libpng10.so.0.1.0.23,
                        uses assembler code tuned for Intel MMX platform)
  makefile.nommx    =>  Linux/ELF makefile
-                       (gcc, creates libpng10.so.0.1.0.23rc5
+                       (gcc, creates libpng10.so.0.1.0.23
                        does not use Intel MMX assembler code)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
@@ -131,12 +131,12 @@
  makefile.openbsd  =>  OpenBSD makefile
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng10.so.0.1.0.23rc5)
+                       creates libpng10.so.0.1.0.23)
  makefile.sunos    =>  Sun makefile
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng10.so.0.1.0.23rc5)
+                       creates libpng10.so.0.1.0.23)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng10.so.0.1.0.23rc5)
+                       creates libpng10.so.0.1.0.23)
  makefile.32sunu   =>  Sun Ultra 32-bit makefile
  makefile.64sunu   =>  Sun Ultra 64-bit makefile
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
diff --git a/KNOWNBUG b/KNOWNBUG
index 1b3f107..8b08362 100644
--- a/KNOWNBUG
+++ b/KNOWNBUG
@@ -1,5 +1,5 @@
 
-Known bugs in libpng version 1.0.23rc5
+Known bugs in libpng version 1.0.23
 
 1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when
    reading interlaced PNG files, when assembler code is enabled but running
diff --git a/LICENSE b/LICENSE
index 5181d8a..e30ae13 100644
--- a/LICENSE
+++ b/LICENSE
@@ -8,7 +8,7 @@
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.0.23rc5, December 29, 2006, are
+libpng versions 1.2.6, August 15, 2004, through 1.0.23, January 5, 2007, are
 Copyright (c) 2004, 2006 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -106,4 +106,4 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-December 29, 2006
+January 5, 2007
diff --git a/README b/README
index cc92f0b..fc2fd40 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.0.23rc5 - December 29, 2006 (shared library 10.0)
+README for libpng version 1.0.23 - January 5, 2007 (shared library 10.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
@@ -190,11 +190,11 @@
        descrip.mms      =>  VMS makefile for MMS or MMK
        makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
        makefile.elf     =>  Linux/ELF makefile symbol versioning,
-                            gcc, creates libpng10.so.0.1.0.23rc5)
+                            gcc, creates libpng10.so.0.1.0.23)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng10.so.0.1.0.23rc5)
+                            (gcc, creates libpng10.so.0.1.0.23)
        makefile.gcmmx   =>  Linux/ELF makefile
-                            (gcc, creates libpng10.so.0.1.0.23rc5,
+                            (gcc, creates libpng10.so.0.1.0.23,
                             uses assembler code tuned for Intel MMX platform)
        makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
        makefile.knr     =>  Archaic UNIX Makefile that converts files with
@@ -216,12 +216,12 @@
        makefile.openbsd =>  OpenBSD makefile
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
        makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng10.so.0.1.0.23rc5)
+                            (gcc, creates libpng10.so.0.1.0.23)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng10.so.0.1.0.23rc5)
+                            (gcc, creates libpng10.so.0.1.0.23)
        makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng10.so.0.1.0.23rc5)
+                            (gcc, creates libpng10.so.0.1.0.23)
        makefile.32sunu  =>  Sun Ultra 32-bit makefile
        makefile.64sunu  =>  Sun Ultra 64-bit makefile
        makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
diff --git a/Y2KINFO b/Y2KINFO
index c4e2174..30ef7e0 100644
--- a/Y2KINFO
+++ b/Y2KINFO
@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      December 29, 2006
+      January 5, 2007
 
       Since the PNG Development group is an ad-hoc body, we can't make
       an official declaration.
 
       This is your unofficial assurance that libpng from version 0.71 and
-      upward through 1.0.23rc5 are Y2K compliant.  It is my belief that earlier
+      upward through 1.0.23 are Y2K compliant.  It is my belief that earlier
       versions were also Y2K compliant.
 
       Libpng only has three year fields.  One is a 2-byte unsigned integer
diff --git a/configure b/configure
index 8af143c..f3967d8 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.61 for libpng 1.0.23rc5.
+# Generated by GNU Autoconf 2.61 for libpng 1.0.23.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -728,8 +728,8 @@
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.0.23rc5'
-PACKAGE_STRING='libpng 1.0.23rc5'
+PACKAGE_VERSION='1.0.23'
+PACKAGE_STRING='libpng 1.0.23'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 
 ac_unique_file="pngget.c"
@@ -1405,7 +1405,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures libpng 1.0.23rc5 to adapt to many kinds of systems.
+\`configure' configures libpng 1.0.23 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1475,7 +1475,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.0.23rc5:";;
+     short | recursive ) echo "Configuration of libpng 1.0.23:";;
    esac
   cat <<\_ACEOF
 
@@ -1585,7 +1585,7 @@
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.0.23rc5
+libpng configure 1.0.23
 generated by GNU Autoconf 2.61
 
 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@@ -1599,7 +1599,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by libpng $as_me 1.0.23rc5, which was
+It was created by libpng $as_me 1.0.23, which was
 generated by GNU Autoconf 2.61.  Invocation command line was
 
   $ $0 $@
@@ -2269,7 +2269,7 @@
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.0.23rc5'
+ VERSION='1.0.23'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -2440,7 +2440,7 @@
 
 
 
-PNGLIB_VERSION=1.0.23rc5
+PNGLIB_VERSION=1.0.23
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=0
 PNGLIB_RELEASE=23
@@ -21119,7 +21119,7 @@
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libpng $as_me 1.0.23rc5, which was
+This file was extended by libpng $as_me 1.0.23, which was
 generated by GNU Autoconf 2.61.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -21172,7 +21172,7 @@
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF
 ac_cs_version="\\
-libpng config.status 1.0.23rc5
+libpng config.status 1.0.23
 configured by $0, generated by GNU Autoconf 2.61,
   with options \\"`echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"
 
diff --git a/configure.ac b/configure.ac
index fbd1828..f86971d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,12 +18,12 @@
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.0.23rc5], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.0.23], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.0.23rc5
+PNGLIB_VERSION=1.0.23
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=0
 PNGLIB_RELEASE=23
diff --git a/example.c b/example.c
index fd7096e..0815873 100644
--- a/example.c
+++ b/example.c
@@ -4,7 +4,7 @@
 /* example.c - an example of using libpng
  * Last changed in libpng 1.2.1 December 7, 2001.
  * This file has been placed in the public domain by the authors.
- * Maintained 1998-2001 Glenn Randers-Pehrson
+ * Maintained 1998-2007 Glenn Randers-Pehrson
  * Maintained 1996, 1997 Andreas Dilger)
  * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  */
diff --git a/libpng.3 b/libpng.3
index c6f61c6..3d13985 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "December 29, 2006"
+.TH LIBPNG 3 "January 5, 2007"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.23rc5
+libpng \- Portable Network Graphics (PNG) Reference Library 1.0.23
 .SH SYNOPSIS
 \fB
 #include <png.h>\fP
@@ -410,7 +410,7 @@
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.0.23rc5 - December 29, 2006
+ libpng version 1.0.23 - January 5, 2007
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2005 Glenn Randers-Pehrson
@@ -3172,13 +3172,13 @@
 
 .SH VIII. Y2K Compliance in libpng
 
-December 29, 2006
+January 5, 2007
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.0.23rc5 are Y2K compliant.  It is my belief that earlier
+upward through 1.0.23 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
@@ -3354,6 +3354,8 @@
  1.2.15beta1-6       13    10215  12.so.0.15[.0]
  1.0.23rc1-5         10    10023  10.so.0.23[.0]
  1.2.15rc1-5         13    10215  12.so.0.15[.0]
+ 1.0.23              10    10023  10.so.0.23[.0]
+ 1.2.15              13    10215  12.so.0.15[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -3409,7 +3411,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.0.23rc5 - December 29, 2006:
+Libpng version 1.0.23 - January 5, 2007:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -3430,7 +3432,7 @@
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.0.23rc5, December 29, 2006, are
+libpng versions 1.2.6, August 15, 2004, through 1.0.23, January 5, 2007, are
 Copyright (c) 2004-2006 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -3529,7 +3531,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-December 29, 2006
+January 5, 2007
 
 .\" end of man page
 
diff --git a/libpng.txt b/libpng.txt
index d5f81de..60664fb 100644
--- a/libpng.txt
+++ b/libpng.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.0.23rc5 - December 29, 2006
+ libpng version 1.0.23 - January 5, 2007
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2005 Glenn Randers-Pehrson
@@ -2762,13 +2762,13 @@
 
 VIII. Y2K Compliance in libpng
 
-December 29, 2006
+January 5, 2007
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.0.23rc5 are Y2K compliant.  It is my belief that earlier
+upward through 1.0.23 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
diff --git a/libpngpf.3 b/libpngpf.3
index d7ef593..ab31214 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "December 29, 2006"
+.TH LIBPNGPF 3 "January 5, 2007"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.23rc5
+libpng \- Portable Network Graphics (PNG) Reference Library 1.0.23
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
diff --git a/png.5 b/png.5
index 141d7cc..8a5210b 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "December 29, 2006"
+.TH PNG 5 "January 5, 2007"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 8793f5d..c729b95 100644
--- a/png.c
+++ b/png.c
@@ -1,9 +1,9 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.2.15 December 31, 2006
+ * Last changed in libpng 1.2.15 January 5, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  */
@@ -13,7 +13,7 @@
 #include "png.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_23rc5 Your_png_h_is_not_version_1_0_23rc5;
+typedef version_1_0_23 Your_png_h_is_not_version_1_0_23;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.  */
@@ -701,8 +701,8 @@
 png_get_copyright(png_structp png_ptr)
 {
    if (&png_ptr != NULL)  /* silence compiler warning about unused png_ptr */
-   return ((png_charp) "\n libpng version 1.0.23rc5 - December 29, 2006\n\
-   Copyright (c) 1998-2006 Glenn Randers-Pehrson\n\
+   return ((png_charp) "\n libpng version 1.0.23 - January 5, 2007\n\
+   Copyright (c) 1998-2007 Glenn Randers-Pehrson\n\
    Copyright (c) 1996-1997 Andreas Dilger\n\
    Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
    return ((png_charp) "");
diff --git a/png.h b/png.h
index 7033cf9..31f0885 100644
--- a/png.h
+++ b/png.h
@@ -1,15 +1,15 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.0.23rc5 - December 29, 2006
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * libpng version 1.0.23 - January 5, 2007
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
  * Authors and maintainers:
  *  libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *  libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *  libpng versions 0.97, January 1998, through 1.0.23rc5 - December 29, 2006: Glenn
+ *  libpng versions 0.97, January 1998, through 1.0.23 - January 5, 2007: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -137,6 +137,8 @@
  *    1.2.15beta1-6           13    10215  12.so.0.15[.0]
  *    1.0.23rc1-5             10    10023  10.so.0.23[.0]
  *    1.2.15rc1-5             13    10215  12.so.0.15[.0]
+ *    1.0.23                  10    10023  10.so.0.23[.0]
+ *    1.2.15                  13    10215  12.so.0.15[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -166,8 +168,8 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.0.23rc5, December 29, 2006, are
- * Copyright (c) 2004, 2006 Glenn Randers-Pehrson, and are
+ * libpng versions 1.2.6, August 15, 2004, through 1.0.23, January 5, 2007, are
+ * Copyright (c) 2004, 2007 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.2.5
  * with the following individual added to the list of Contributing Authors:
  *
@@ -278,13 +280,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    December 29, 2006
+ *    January 5, 2007
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
  *
  *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.0.23rc5 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.0.23 are Y2K compliant.  It is my belief that earlier
  *    versions were also Y2K compliant.
  *
  *    Libpng only has three year fields.  One is a 2-byte unsigned integer
@@ -340,9 +342,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.0.23rc5"
+#define PNG_LIBPNG_VER_STRING "1.0.23"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.0.23rc5 - December 29, 2006 (header)\n"
+   " libpng version 1.0.23 - January 5, 2007 (header)\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  10
@@ -354,7 +356,7 @@
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
 
-#define PNG_LIBPNG_VER_BUILD  5
+#define PNG_LIBPNG_VER_BUILD  0
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -371,7 +373,7 @@
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                        PNG_LIBPNG_BUILD_PRIVATE */
 
-#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_RC
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
@@ -1388,7 +1390,7 @@
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef png_structp version_1_0_23rc5;
+typedef png_structp version_1_0_23;
 
 typedef png_struct FAR * FAR * png_structpp;
 
diff --git a/pngconf.h b/pngconf.h
index a6c5a9a..1a9b4ba 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,9 +1,9 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.0.23rc5 - December 29, 2006
+ * libpng version 1.0.23 - January 5, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2005 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  */
diff --git a/pnggccrd.c b/pnggccrd.c
index f729fae..7983f8e 100644
--- a/pnggccrd.c
+++ b/pnggccrd.c
@@ -7,9 +7,9 @@
  *     and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
  *     for Intel's performance analysis of the MMX vs. non-MMX code.
  *
- * Last changed in libpng 1.2.15 December 31, 2006
+ * Last changed in libpng 1.2.15 January 5, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * Copyright (c) 1998, Intel Corporation
  *
  * Based on MSVC code contributed by Nirav Chhatrapati, Intel Corp., 1998.
diff --git a/pngget.c b/pngget.c
index 600d469..036e9af 100644
--- a/pngget.c
+++ b/pngget.c
@@ -1,9 +1,9 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * Last changed in libpng 1.2.15 December 31, 2006
+ * Last changed in libpng 1.2.15 January 5, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  */
diff --git a/pngread.c b/pngread.c
index 3a12d7c..56dac8a 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,9 +1,9 @@
 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.2.15 December 31, 2006
+ * Last changed in libpng 1.2.15 January 5, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
diff --git a/pngrtran.c b/pngrtran.c
index 3bf9f10..2fa96f3 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,9 +1,9 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Last changed in libpng 1.2.15 December 31, 2006
+ * Last changed in libpng 1.2.15 January 5, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
diff --git a/pngrutil.c b/pngrutil.c
index aa7013e..6157b3d 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,9 +1,9 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.2.15 December 31, 2006
+ * Last changed in libpng 1.2.15 January 5, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
diff --git a/pngset.c b/pngset.c
index 79be2da..24fa24d 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,9 +1,9 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.2.15 December 31, 2006
+ * Last changed in libpng 1.2.15 January 5, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
diff --git a/pngtest.c b/pngtest.c
index f3adf15..94ccc5d 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -534,7 +534,8 @@
       /* Make sure the caller isn't assuming zeroed memory. */
       png_memset(pinfo->pointer, 0xdd, pinfo->size);
       if(verbose)
-         printf("png_malloc %lu bytes at %x\n",size,pinfo->pointer);
+         printf("png_malloc %lu bytes at %x\n",(unsigned long)size,
+          pinfo->pointer);
       return (png_voidp)(pinfo->pointer);
    }
 }
@@ -1186,7 +1187,7 @@
       iwidth = png_get_image_width(write_ptr, write_info_ptr);
       iheight = png_get_image_height(write_ptr, write_info_ptr);
       fprintf(STDERR, "Image width = %lu, height = %lu\n",
-         iwidth, iheight);
+         (unsigned long)iwidth, (unsigned long)iheight);
    }
 #endif
 
@@ -1310,7 +1311,8 @@
    fprintf(STDERR, "   with zlib   version %s\n", ZLIB_VERSION);
    fprintf(STDERR,"%s",png_get_copyright(NULL));
    /* Show the version of libpng used in building the library */
-   fprintf(STDERR," library (%lu):%s", png_access_version_number(),
+   fprintf(STDERR," library (%lu):%s",
+      (unsigned long)png_access_version_number(),
       png_get_header_version(NULL));
    /* Show the version of libpng used in building the application */
    fprintf(STDERR," pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
@@ -1398,7 +1400,8 @@
          if (kerror == 0)
          {
 #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-            fprintf(STDERR, "\n PASS (%lu zero samples)\n",zero_samples);
+            fprintf(STDERR, "\n PASS (%lu zero samples)\n",
+               (unsigned long)zero_samples);
 #else
             fprintf(STDERR, " PASS\n");
 #endif
@@ -1406,7 +1409,7 @@
             for (k=0; k<256; k++)
                if(filters_used[k])
                   fprintf(STDERR, " Filter %d was used %lu times\n",
-                     k,filters_used[k]);
+                     k,(unsigned long)filters_used[k]);
 #endif
 #if defined(PNG_TIME_RFC1123_SUPPORTED)
          if(tIME_chunk_present != 0)
@@ -1431,7 +1434,7 @@
                current_allocation);
             while (pinfo != NULL)
             {
-               fprintf(STDERR, " %lu bytes at %x\n", pinfo->size,
+               fprintf(STDERR, " %lu bytes at %x\n", (unsigned long)pinfo->size,
                  (unsigned int) pinfo->pointer);
                pinfo = pinfo->next;
             }
@@ -1471,7 +1474,8 @@
                 int k;
 #endif
 #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-                fprintf(STDERR, "\n PASS (%lu zero samples)\n",zero_samples);
+                fprintf(STDERR, "\n PASS (%lu zero samples)\n",
+                   (unsigned long)zero_samples);
 #else
                 fprintf(STDERR, " PASS\n");
 #endif
@@ -1479,7 +1483,7 @@
                 for (k=0; k<256; k++)
                    if(filters_used[k])
                       fprintf(STDERR, " Filter %d was used %lu times\n",
-                         k,filters_used[k]);
+                         k,(unsigned long)filters_used[k]);
 #endif
 #if defined(PNG_TIME_RFC1123_SUPPORTED)
              if(tIME_chunk_present != 0)
@@ -1507,7 +1511,7 @@
              while (pinfo != NULL)
              {
                 fprintf(STDERR," %lu bytes at %x\n",
-                   pinfo->size, (unsigned int)pinfo->pointer);
+                   (unsigned long)pinfo->size, (unsigned int)pinfo->pointer);
                 pinfo = pinfo->next;
              }
           }
@@ -1547,4 +1551,4 @@
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_23rc5 your_png_h_is_not_version_1_0_23rc5;
+typedef version_1_0_23 your_png_h_is_not_version_1_0_23;
diff --git a/pngwrite.c b/pngwrite.c
index df06c92..df7ade3 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,9 +1,9 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.2.15 December 31, 2006
+ * Last changed in libpng 1.2.15 January 5, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  */
diff --git a/pngwutil.c b/pngwutil.c
index 5db91cb..e108c61 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,9 +1,9 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.2.15 December 31, 2006
+ * Last changed in libpng 1.2.15 January 5, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  */
diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt
index 3f2c3e0..2aa70d4 100644
--- a/scripts/CMakeLists.txt
+++ b/scripts/CMakeLists.txt
@@ -1,5 +1,8 @@
 project(PNG)
 
+# Copyright (C) 2007 Glenn Randers-Pehrson
+# For conditions of distribution and use, see copyright notice in png.h
+
 set(PNGLIB_MAJOR 1)
 set(PNGLIB_MINOR 0)
 set(PNGLIB_RELEASE 23)
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
index 64111cc..42ab4c3 100755
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -8,7 +8,7 @@
 
 # Modeled after libxml-config.
 
-version=1.0.23rc5
+version=1.0.23
 prefix=""
 libdir=""
 libs=""
diff --git a/scripts/libpng-config.in b/scripts/libpng-config.in
index 2c5f9cf..f227ee5 100755
--- a/scripts/libpng-config.in
+++ b/scripts/libpng-config.in
@@ -3,7 +3,7 @@
 # libpng-config
 # provides configuration info for libpng.
 
-# Copyright (C) 2002, 2004, 2006 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2004, 2006, 2007 Glenn Randers-Pehrson
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Modeled after libxml-config.
diff --git a/scripts/libpng.pc-configure.in b/scripts/libpng.pc-configure.in
index e779d56..94e2fdc 100644
--- a/scripts/libpng.pc-configure.in
+++ b/scripts/libpng.pc-configure.in
@@ -5,6 +5,6 @@
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.0.23rc5
+Version: 1.0.23
 Libs: -L${libdir} -lpng10
 Cflags: -I${includedir} @LIBPNG_NO_MMX@
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index 476fbc1..9677f87 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.0.23rc5
+Version: 1.0.23
 Libs: -L${libdir} -lpng10
 Cflags: -I${includedir}
diff --git a/scripts/makefile.32sunu b/scripts/makefile.32sunu
index 108568d..2a15ddf 100644
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu
index 01b677b..c63fca6 100644
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.aix b/scripts/makefile.aix
index 20ccde7..d5740e9 100644
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -20,7 +20,7 @@
 
 LIBNAME=libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local
diff --git a/scripts/makefile.beos b/scripts/makefile.beos
index f407597..ac992fc 100644
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.cygwin b/scripts/makefile.cygwin
index a26742b..c9bea48 100644
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -80,7 +80,7 @@
 LIBNAME = libpng10
 PNGMAJ = 0
 CYGDLL = 10
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(CYGDLL).dll
diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin
index 1666be9..1bdc3cd 100644
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -19,7 +19,7 @@
 # Library name:
 LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.dec b/scripts/makefile.dec
index 1ec1f2c..24f3f77 100644
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -5,7 +5,7 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng10
 
diff --git a/scripts/makefile.elf b/scripts/makefile.elf
index 7ed52b0..622a6d6 100644
--- a/scripts/makefile.elf
+++ b/scripts/makefile.elf
@@ -12,7 +12,7 @@
 # Library name:
 LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.freebsd b/scripts/makefile.freebsd
index e2549f6..7821e38 100644
--- a/scripts/makefile.freebsd
+++ b/scripts/makefile.freebsd
@@ -1,5 +1,5 @@
 # makefile for libpng under FreeBSD
-# Copyright (C) 2002 Glenn Randers-Pehrson and Andrey A. Chernov
+# Copyright (C) 2002, 2007 Glenn Randers-Pehrson and Andrey A. Chernov
 # For conditions of distribution and use, see copyright notice in png.h
 
 PREFIX?=        /usr/local
diff --git a/scripts/makefile.gcmmx b/scripts/makefile.gcmmx
index 0e49e12..163d160 100644
--- a/scripts/makefile.gcmmx
+++ b/scripts/makefile.gcmmx
@@ -16,7 +16,7 @@
 # Library name:
 LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.hp64 b/scripts/makefile.hp64
index 7a1dccd..5bf10dc 100644
--- a/scripts/makefile.hp64
+++ b/scripts/makefile.hp64
@@ -18,7 +18,7 @@
 # Library name:
 LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc
index 6260701..75c730e 100644
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux
index a2e1dad..aee5911 100644
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -18,7 +18,7 @@
 # Library name:
 LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index 96d1f39..9e456f4 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.mingw b/scripts/makefile.mingw
index 0987546..67dc915 100644
--- a/scripts/makefile.mingw
+++ b/scripts/makefile.mingw
@@ -76,7 +76,7 @@
 LIBNAME = libpng10
 PNGMAJ = 0
 MINGDLL = 10
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=libpng$(MINGDLL).dll
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index 2c23661..38129f8 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -2,6 +2,7 @@
 # make obj && make depend && make && make test
 # make includes && make install
 # Copyright (C) 2002 Patrick R.L. Welche
+# Copyright (C) 2007 Glenn Randers-Pehrson
 # For conditions of distribution and use, see copyright notice in png.h
 
 # You should also run makefile.netbsd
@@ -13,7 +14,7 @@
 
 LIB=	png12
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.0.23rc5
+SHLIB_MINOR=	1.0.23
 SRCS=	pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 		pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 		pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index 65eb0db..4ca5c6f 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -2,6 +2,7 @@
 # make obj && make depend && make && make test
 # make includes && make install
 # Copyright (C) 2002 Patrick R.L. Welche
+# Copyright (C) 2007 Glenn Randers-Pehrson
 # For conditions of distribution and use, see copyright notice in png.h
 
 # You should also run makefile.ne0bsd
@@ -13,7 +14,7 @@
 
 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.0.23rc5
+SHLIB_MINOR=	1.0.23
 SRCS=	pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 		pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 		pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.nommx b/scripts/makefile.nommx
index 1239712..e60150b 100644
--- a/scripts/makefile.nommx
+++ b/scripts/makefile.nommx
@@ -1,12 +1,13 @@
 # makefile for libpng.a and libpng10.so on Linux ELF with gcc
-# Copyright (C) 1998, 1999, 2002, 2006 Greg Roelofs and Glenn Randers-Pehrson
+# Copyright (C) 1998, 1999, 2002, 2006, 2007 Greg Roelofs and
+# Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
 LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index b1ef474..10815b4 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -1,5 +1,6 @@
 # makefile for libpng
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+# Copyright (C) 2007 Glenn Randers-Pehrson
 # For conditions of distribution and use, see copyright notice in png.h
 
 PREFIX?= /usr/local
@@ -7,7 +8,7 @@
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.0.23rc5
+SHLIB_MINOR=	1.0.23
 
 LIB=	png
 SRCS=	png.c pngerror.c pnggccrd.c pngget.c pngmem.c pngpread.c \
diff --git a/scripts/makefile.sco b/scripts/makefile.sco
index 8763e81..4f273c1 100644
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -9,7 +9,7 @@
 # Library name:
 LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc
index e70f8d5..a9f679d 100644
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi
index 6366853..14f30fb 100644
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -1,12 +1,12 @@
 # makefile for libpng.a and libpng10.so, SGI IRIX with 'cc'
-# Copyright (C) 2001-2002, 2006 Glenn Randers-Pehrson
+# Copyright (C) 2001-2002, 2006, 2007 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
 LIBNAME=libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.so9 b/scripts/makefile.so9
index 96cd885..95b1104 100644
--- a/scripts/makefile.so9
+++ b/scripts/makefile.so9
@@ -8,7 +8,7 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng10
 
diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris
index 1055297..5acda13 100644
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -1,5 +1,5 @@
 # makefile for libpng on Solaris 2.x with gcc
-# Copyright (C) 2004, 2006 Glenn Randers-Pehrson
+# Copyright (C) 2004, 2006, 2007 Glenn Randers-Pehrson
 # Contributed by William L. Sebok, based on makefile.linux
 # Copyright (C) 1998 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.0.23rc5
+PNGMIN = 1.0.23
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/pngos2.def b/scripts/pngos2.def
index a5602fe..f81ba29 100644
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.0.23rc5
+; Version 1.0.23
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
diff --git a/scripts/pngw32.def b/scripts/pngw32.def
index 9c39a4b..6b18675 100644
--- a/scripts/pngw32.def
+++ b/scripts/pngw32.def
@@ -5,7 +5,7 @@
 LIBRARY
 
 EXPORTS
-;Version 1.0.23rc5
+;Version 1.0.23
   png_build_grayscale_palette  @1
   png_check_sig        @2
   png_chunk_error      @3