diff --git a/ANNOUNCE b/ANNOUNCE
index 8e8d919..ee1c973 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.5.7beta06 - November 28, 2011
+Libpng 1.5.7rc01 - December 1, 2011
 
 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.
@@ -9,20 +9,20 @@
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.5.7beta06.tar.xz (LZMA-compressed, recommended)
-   1.5.7beta06.tar.gz
-   1.5.7beta06.tar.bz2
+   1.5.7rc01.tar.xz (LZMA-compressed, recommended)
+   1.5.7rc01.tar.gz
+   1.5.7rc01.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp157b06.7z  (LZMA-compressed, recommended)
-   lp157b06.zip
+   lp157r01.7z  (LZMA-compressed, recommended)
+   lp157r01.zip
 
 Other information:
 
-   1.5.7beta06-README.txt
-   1.5.7beta06-LICENSE.txt
+   1.5.7rc01-README.txt
+   1.5.7rc01-LICENSE.txt
 
 Changes since the last public release (1.5.6):
 
@@ -113,8 +113,8 @@
   Moved pngvalid.c into contrib/libtests
   Rebuilt Makefile.in, configure, etc., with autoconf-2.68
 
-Version 1.5.7beta06 [November 28, 2011]
-  Replaced an "#if" with "ifdef" in pngrtran.c
+Version 1.5.7rc01 [December 1, 2011]
+  Replaced an "#if" with "#ifdef" in pngrtran.c
   Revised #if PNG_DO_BC block in png.c (use #ifdef and add #else)
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
diff --git a/CHANGES b/CHANGES
index ac48513..f06af3a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3758,8 +3758,8 @@
   Moved pngvalid.c into contrib/libtests
   Rebuilt Makefile.in, configure, etc., with autoconf-2.68
 
-Version 1.5.7beta06 [November 28, 2011]
-  Replaced an "#if" with "ifdef" in pngrtran.c
+Version 1.5.7rc01 [December 1, 2011]
+  Replaced an "#if" with "#ifdef" in pngrtran.c
   Revised #if PNG_DO_BC block in png.c (use #ifdef and add #else)
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ccf68d6..a1c0c2f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -229,7 +229,7 @@
 # SET UP LINKS
 if(PNG_SHARED)
   set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#   VERSION 15.${PNGLIB_RELEASE}.1.5.7beta06
+#   VERSION 15.${PNGLIB_RELEASE}.1.5.7rc01
     VERSION 15.${PNGLIB_RELEASE}.0
     SOVERSION 15
     CLEAN_DIRECT_OUTPUT 1)
diff --git a/LICENSE b/LICENSE
index 5ae9bf5..47bc2d9 100644
--- a/LICENSE
+++ b/LICENSE
@@ -10,7 +10,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.7beta06, November 25, 2011, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.7rc01, December 1, 2011, are
 Copyright (c) 2004, 2006-2011 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
@@ -108,4 +108,4 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-November 25, 2011
+December 1, 2011
diff --git a/README b/README
index 79d1663..d88b102 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.5.7beta06 - November 25, 2011 (shared library 15.0)
+README for libpng version 1.5.7rc01 - December 1, 2011 (shared library 15.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
diff --git a/configure b/configure
index cf8abe4..7efcaf3 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.68 for libpng 1.5.7beta06.
+# Generated by GNU Autoconf 2.68 for libpng 1.5.7rc01.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -570,8 +570,8 @@
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.5.7beta06'
-PACKAGE_STRING='libpng 1.5.7beta06'
+PACKAGE_VERSION='1.5.7rc01'
+PACKAGE_STRING='libpng 1.5.7rc01'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 PACKAGE_URL=''
 
@@ -1320,7 +1320,7 @@
   # 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 1.5.7beta06 to adapt to many kinds of systems.
+\`configure' configures libpng 1.5.7rc01 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1390,7 +1390,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.5.7beta06:";;
+     short | recursive ) echo "Configuration of libpng 1.5.7rc01:";;
    esac
   cat <<\_ACEOF
 
@@ -1501,7 +1501,7 @@
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.5.7beta06
+libpng configure 1.5.7rc01
 generated by GNU Autoconf 2.68
 
 Copyright (C) 2010 Free Software Foundation, Inc.
@@ -1924,7 +1924,7 @@
 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 1.5.7beta06, which was
+It was created by libpng $as_me 1.5.7rc01, which was
 generated by GNU Autoconf 2.68.  Invocation command line was
 
   $ $0 $@
@@ -2739,7 +2739,7 @@
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.5.7beta06'
+ VERSION='1.5.7rc01'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -2803,7 +2803,7 @@
 
 
 
-PNGLIB_VERSION=1.5.7beta06
+PNGLIB_VERSION=1.5.7rc01
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=5
 PNGLIB_RELEASE=7
@@ -13414,7 +13414,7 @@
 # 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 1.5.7beta06, which was
+This file was extended by libpng $as_me 1.5.7rc01, which was
 generated by GNU Autoconf 2.68.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -13480,7 +13480,7 @@
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-libpng config.status 1.5.7beta06
+libpng config.status 1.5.7rc01
 configured by $0, generated by GNU Autoconf 2.68,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index 3917254..ce9855f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,12 +18,12 @@
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.5.7beta06], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.5.7rc01], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.5.7beta06
+PNGLIB_VERSION=1.5.7rc01
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=5
 PNGLIB_RELEASE=7
diff --git a/libpng-manual.txt b/libpng-manual.txt
index 01813c9..6d75d48 100644
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -1,6 +1,6 @@
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.7beta06 - November 25, 2011
+ libpng version 1.5.7rc01 - December 1, 2011
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.7beta06 - November 25, 2011
+ libpng versions 0.97, January 1998, through 1.5.7rc01 - December 1, 2011
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -4573,13 +4573,13 @@
 
 XIV. Y2K Compliance in libpng
 
-November 25, 2011
+December 1, 2011
 
 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 1.5.7beta06 are Y2K compliant.  It is my belief that earlier
+upward through 1.5.7rc01 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/libpng.3 b/libpng.3
index c9a4bf7..d96b61b 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "November 25, 2011"
+.TH LIBPNG 3 "December 1, 2011"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.5.7beta06
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.7rc01
 .SH SYNOPSIS
 \fI\fB
 
@@ -977,7 +977,7 @@
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.7beta06 - November 25, 2011
+ libpng version 1.5.7rc01 - December 1, 2011
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -988,7 +988,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.7beta06 - November 25, 2011
+ libpng versions 0.97, January 1998, through 1.5.7rc01 - December 1, 2011
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -5551,13 +5551,13 @@
 
 .SH XIV. Y2K Compliance in libpng
 
-November 25, 2011
+December 1, 2011
 
 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 1.5.7beta06 are Y2K compliant.  It is my belief that earlier
+upward through 1.5.7rc01 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
@@ -5759,7 +5759,8 @@
  1.5.6beta01-07      15    10506  15.so.15.6[.0]
  1.5.6rc01-03        15    10506  15.so.15.6[.0]
  1.5.6               15    10506  15.so.15.6[.0]
- 1.5.7beta01-06      15    10507  15.so.15.7[.0]
+ 1.5.7beta01-05      15    10507  15.so.15.7[.0]
+ 1.5.7rc01           15    10507  15.so.15.7[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -5816,7 +5817,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.5.7beta06 - November 25, 2011:
+Libpng version 1.5.7rc01 - December 1, 2011:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -5839,7 +5840,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.7beta06, November 25, 2011, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.7rc01, December 1, 2011, are
 Copyright (c) 2004,2006-2007 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
@@ -5938,7 +5939,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-November 25, 2011
+December 1, 2011
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 8aab4ce..465f9cd 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "November 25, 2011"
+.TH LIBPNGPF 3 "December 1, 2011"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.5.7beta06
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.7rc01
 (private functions)
 .SH SYNOPSIS
 \fB#include \fI"pngpriv.h"
diff --git a/png.5 b/png.5
index 163a0e3..b7326d3 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "November 25, 2011"
+.TH PNG 5 "December 1, 2011"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 3994778..27fbe98 100644
--- a/png.c
+++ b/png.c
@@ -14,7 +14,7 @@
 #include "pngpriv.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_5_7beta06 Your_png_h_is_not_version_1_5_7beta06;
+typedef png_libpng_version_1_5_7rc01 Your_png_h_is_not_version_1_5_7rc01;
 
 /* Tells libpng that we have already handled the first "num_bytes" bytes
  * of the PNG file signature.  If the PNG data is embedded into another
@@ -655,13 +655,13 @@
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.5.7beta06 - November 28, 2011" PNG_STRING_NEWLINE \
+     "libpng version 1.5.7rc01 - December 1, 2011" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2011 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
      "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
      "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
      PNG_STRING_NEWLINE;
 #  else
-      return "libpng version 1.5.7beta06 - November 28, 2011\
+      return "libpng version 1.5.7rc01 - December 1, 2011\
       Copyright (c) 1998-2011 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
@@ -2335,7 +2335,7 @@
  * integer bits (the top 4) simply determine a shift.
  *
  * The worst case is the 16-bit distinction between 65535 and 65534, this
- * requires perhaps spurious accuracty in the decoding of the logarithm to
+ * requires perhaps spurious accuracy in the decoding of the logarithm to
  * distinguish log2(65535/65534.5) - 10^-5 or 17 bits.  There is little chance
  * of getting this accuracy in practice.
  *
@@ -2346,17 +2346,18 @@
 static png_uint_32
 png_32bit_exp[16] =
 {
-#  if PNG_DO_BC
+#  ifdef PNG_DO_BC
       for (i=0;i<16;++i) { .5 + e(-i/16*l(2))*2^32; }
-#  endif
+#  else
    /* NOTE: the first entry is deliberately set to the maximum 32-bit value. */
    4294967295U, 4112874773U, 3938502376U, 3771522796U, 3611622603U, 3458501653U,
    3311872529U, 3171459999U, 3037000500U, 2908241642U, 2784941738U, 2666869345U,
    2553802834U, 2445529972U, 2341847524U, 2242560872U
+#  endif
 };
 
 /* Adjustment table; provided to explain the numbers in the code below. */
-#if PNG_DO_BC
+#ifdef PNG_DO_BC
 for (i=11;i>=0;--i){ print i, " ", (1 - e(-(2^i)/65536*l(2))) * 2^(32-i), "\n"}
    11 44937.64284865548751208448
    10 45180.98734845585101160448
@@ -2519,7 +2520,7 @@
 }
 
 /* Internal function to build a single 16-bit table - the table consists of
- * 'num' 256 entry subtables, where 'num' is determined by 'shift' - the amount
+ * 'num' 256-entry subtables, where 'num' is determined by 'shift' - the amount
  * to shift the input values right (or 16-number_of_signifiant_bits).
  *
  * The caller is responsible for ensuring that the table gets cleaned up on
@@ -2606,9 +2607,9 @@
    png_uint_16pp table = *ptable =
        (png_uint_16pp)png_calloc(png_ptr, num * png_sizeof(png_uint_16p));
 
-   /* 'num' is the number of tables and also the number of low bits of low
-    * bits of the input 16-bit value used to select a table.  Each table is
-    * itself index by the high 8 bits of the value.
+   /* 'num' is the number of tables and also the number of low bits of the
+    * input 16-bit value used to select a table.  Each table is itself indexed
+    * by the high 8 bits of the value.
     */
    for (i = 0; i < num; i++)
       table[i] = (png_uint_16p)png_malloc(png_ptr,
@@ -2659,7 +2660,7 @@
 
 /* Build a single 8-bit table: same as the 16-bit case but much simpler (and
  * typically much faster).  Note that libpng currently does no sBIT processing
- * (apparently contrary to the spec) so a 256 entry table is always generated.
+ * (apparently contrary to the spec) so a 256-entry table is always generated.
  */
 static void
 png_build_8bit_table(png_structp png_ptr, png_bytepp ptable,
@@ -2795,7 +2796,7 @@
       * Where 'iv' is the input color value and 'ov' is the output value -
       * pow(iv, gamma).
       *
-      * Thus the gamma table consists of up to 256 256 entry tables.  The table
+      * Thus the gamma table consists of up to 256 256-entry tables.  The table
       * is selected by the (8-gamma_shift) most significant of the low 8 bits of
       * the color value then indexed by the upper 8 bits:
       *
diff --git a/png.h b/png.h
index ec374be..ae0f762 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.5.7beta06 - November 25, 2011
+ * libpng version 1.5.7rc01 - December 1, 2011
  * Copyright (c) 1998-2011 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.)
@@ -11,7 +11,7 @@
  * 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 1.5.7beta06 - November 25, 2011: Glenn
+ *   libpng versions 0.97, January 1998, through 1.5.7rc01 - December 1, 2011: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -163,7 +163,8 @@
  *    1.5.6beta01-07          15    10506  15.so.15.6[.0]
  *    1.5.6rc01-03            15    10506  15.so.15.6[.0]
  *    1.5.6                   15    10506  15.so.15.6[.0]
- *    1.5.7beta01-06          15    10507  15.so.15.7[.0]
+ *    1.5.7beta01-05          15    10507  15.so.15.7[.0]
+ *    1.5.7rc01               15    10507  15.so.15.7[.0]
  *
  *   Henceforth the source version will match the shared-library major
  *   and minor numbers; the shared-library major version number will be
@@ -195,7 +196,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.5.7beta06, November 25, 2011, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.7rc01, December 1, 2011, are
  * Copyright (c) 2004, 2006-2011 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:
@@ -307,13 +308,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    November 25, 2011
+ *    December 1, 2011
  *
  *    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 1.5.7beta06 are Y2K compliant.  It is my belief that
+ *    upward through 1.5.7rc01 are Y2K compliant.  It is my belief that
  *    earlier versions were also Y2K compliant.
  *
  *    Libpng only has two year fields.  One is a 2-byte unsigned integer
@@ -371,9 +372,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.5.7beta06"
+#define PNG_LIBPNG_VER_STRING "1.5.7rc01"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.5.7beta06 - November 25, 2011\n"
+     " libpng version 1.5.7rc01 - December 1, 2011\n"
 
 #define PNG_LIBPNG_VER_SONUM   15
 #define PNG_LIBPNG_VER_DLLNUM  15
@@ -387,7 +388,7 @@
  * PNG_LIBPNG_VER_STRING, omitting any leading zero:
  */
 
-#define PNG_LIBPNG_VER_BUILD  06
+#define PNG_LIBPNG_VER_BUILD  01
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -534,7 +535,7 @@
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef char* png_libpng_version_1_5_7beta06;
+typedef char* png_libpng_version_1_5_7rc01;
 
 /* Three color definitions.  The order of the red, green, and blue, (and the
  * exact size) is not important, although the size of the fields need to
diff --git a/pngconf.h b/pngconf.h
index ee819eb..8a36782 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.5.7beta06 - November 25, 2011
+ * libpng version 1.5.7rc01 - December 1, 2011
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngtest.c b/pngtest.c
index 59eab56..1ae3438 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1817,4 +1817,4 @@
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_5_7beta06 Your_png_h_is_not_version_1_5_7beta06;
+typedef png_libpng_version_1_5_7rc01 Your_png_h_is_not_version_1_5_7rc01;
diff --git a/projects/vstudio/readme.txt b/projects/vstudio/readme.txt
index 9948afa..4cd73bc 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.5.7beta06 - November 25, 2011
+libpng version 1.5.7rc01 - December 1, 2011
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index 6279cf9..6ca55c1 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.5.7beta06 - November 25, 2011
+ * libpng version 1.5.7rc01 - December 1, 2011
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index 7f312d2..29e0a6e 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,9 +1,9 @@
 
-Makefiles for  libpng version 1.5.7beta06 - November 25, 2011
+Makefiles for  libpng version 1.5.7rc01 - December 1, 2011
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng15.so.15.1.5.7beta06)
+                       (gcc, creates libpng15.so.15.1.5.7rc01)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
                        ansi2knr (Requires ansi2knr.c from
@@ -20,7 +20,7 @@
  makefile.dec      =>  DEC Alpha UNIX makefile
  makefile.dj2      =>  DJGPP 2 makefile
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       (gcc, creates libpng15.so.15.1.5.7beta06)
+                       (gcc, creates libpng15.so.15.1.5.7rc01)
  makefile.freebsd  =>  FreeBSD makefile
  makefile.gcc      =>  Generic gcc makefile
  makefile.hpgcc    =>  HPUX makefile using gcc
@@ -35,12 +35,12 @@
  makefile.os2      =>  OS/2 Makefile (gcc and emx, requires libpng.def)
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng15.so.15.1.5.7beta06)
+                       creates libpng15.so.15.1.5.7rc01)
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng15.so.15.1.5.7beta06)
+                       creates libpng15.so.15.1.5.7rc01)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng15.so.15.1.5.7beta06)
+                       creates libpng15.so.15.1.5.7rc01)
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.sunos    =>  Sun makefile
  makefile.32sunu   =>  Sun Ultra 32-bit makefile
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
index 6891746..a67a6cc 100755
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -11,7 +11,7 @@
 
 # Modeled after libxml-config.
 
-version=1.5.7beta06
+version=1.5.7rc01
 prefix=""
 libdir=""
 libs=""
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index d539540..09f973c 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.5.7beta06
+Version: 1.5.7rc01
 Libs: -L${libdir} -lpng15
 Cflags: -I${includedir}
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index a6789f7..518ca1b 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -17,7 +17,7 @@
 
 LIB=	png15
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.5.7beta06
+SHLIB_MINOR=	1.5.7rc01
 SRCS=	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 379c7f8..7096640 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -17,7 +17,7 @@
 
 LIB=	png
 SHLIB_MAJOR=	15
-SHLIB_MINOR=	1.5.7beta06
+SHLIB_MINOR=	1.5.7rc01
 SRCS=	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.openbsd b/scripts/makefile.openbsd
index 34e5d94..f9e1ccc 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -11,7 +11,7 @@
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	15
-SHLIB_MINOR=	1.5.7beta06
+SHLIB_MINOR=	1.5.7rc01
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index 36177bd..094c2ab 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -3,7 +3,7 @@
 
 /* pnglibconf.h - library build configuration */
 
-/* Libpng 1.5.7beta06 - November 25, 2011 */
+/* Libpng 1.5.7rc01 - December 1, 2011 */
 
 /* Copyright (c) 1998-2011 Glenn Randers-Pehrson */
 
diff --git a/scripts/symbols.def b/scripts/symbols.def
index 40aef7a..af40b4d 100644
--- a/scripts/symbols.def
+++ b/scripts/symbols.def
@@ -5,7 +5,7 @@
 LIBRARY
 
 EXPORTS
-;Version 1.5.7beta06
+;Version 1.5.7rc01
  png_access_version_number @1
  png_set_sig_bytes @2
  png_sig_cmp @3