diff --git a/ANNOUNCE b/ANNOUNCE
index bafd00e..355cc1f 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.5.10beta02 - February 25, 2012
+Libpng 1.5.10beta02 - February 27, 2012
 
 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.
@@ -42,7 +42,7 @@
   Revised the SAFE_LIMITS feature to be the same as the feature in libpng16.
   Added information about the new limits in the manual.
 
-Version 1.5.10beta02 [February 25, 2012]
+Version 1.5.10beta02 [February 27, 2012]
   Updated Makefile.in
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
diff --git a/CHANGES b/CHANGES
index efe4d47..f7ab968 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3827,7 +3827,7 @@
   Revised the SAFE_LIMITS feature to be the same as the feature in libpng16.
   Added information about the new limits in the manual.
 
-Version 1.5.10beta02 [February 25, 2012]
+Version 1.5.10beta02 [February 27, 2012]
   Updated Makefile.in
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
diff --git a/LICENSE b/LICENSE
index bae3062..8779a1e 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 1.5.10beta02, February 24, 2012, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.10beta02, February 27, 2012, 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
-February 24, 2012
+February 27, 2012
diff --git a/Makefile.in b/Makefile.in
index ebc8bc6..2ff35f7 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -102,7 +102,7 @@
 	pngerror.c pngget.c pngmem.c pngpread.c pngread.c pngrio.c \
 	pngrtran.c pngrutil.c pngset.c pngtrans.c pngwio.c pngwrite.c \
 	pngwtran.c pngwutil.c png.h pngconf.h pngdebug.h pnginfo.h \
-	pngpriv.h pngstruct.h arm/filter_neon.S
+	pngpriv.h pngstruct.h arm/filter_neon.S pngusr.dfa
 @PNG_ARM_NEON_TRUE@am__objects_1 = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo
 am_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS =  \
 	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-png.lo \
@@ -356,7 +356,7 @@
 	pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c \
 	pngrutil.c pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c \
 	pngwutil.c png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h \
-	pngstruct.h $(am__append_1)
+	pngstruct.h pngusr.dfa $(am__append_1)
 nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS = @LIBPNG_DEFINES@
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS = -no-undefined \
@@ -1373,11 +1373,11 @@
 	mv dfn3.out $@
 
 # The .dfn file for pnglibconf.h is machine generated
-pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
+pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h pngusr.dfa $(DFA_XTRA)
 	rm -f $@ dfn?.out
 	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out version=search\
 	    ${srcdir}/pngconf.h ${srcdir}/scripts/pnglibconf.dfa\
-	    $(DFA_XTRA) 1>&2
+	    ${srcdir}/pngusr.dfa $(DFA_XTRA) 1>&2
 	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
 	rm dfn1.out
 	mv dfn2.out $@
diff --git a/README b/README
index 6f15a72..c66c5bf 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.5.10beta02 - February 24, 2012 (shared library 15.0)
+README for libpng version 1.5.10beta02 - February 27, 2012 (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/libpng-manual.txt b/libpng-manual.txt
index 3f287ef..fafab35 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 1.5.10beta02 - February 25, 2012
+ libpng version 1.5.10beta02 - February 27, 2012
  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 1.5.10beta02 - February 25, 2012
+ libpng versions 0.97, January 1998, through 1.5.10beta02 - February 27, 2012
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -4587,7 +4587,7 @@
 
 XIV. Y2K Compliance in libpng
 
-February 25, 2012
+February 27, 2012
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
diff --git a/libpng.3 b/libpng.3
index e559672..127538c 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "February 25, 2012"
+.TH LIBPNG 3 "February 27, 2012"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.5.10beta02
 .SH SYNOPSIS
@@ -977,7 +977,7 @@
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.10beta02 - February 25, 2012
+ libpng version 1.5.10beta02 - February 27, 2012
  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 1.5.10beta02 - February 25, 2012
+ libpng versions 0.97, January 1998, through 1.5.10beta02 - February 27, 2012
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -5565,7 +5565,7 @@
 
 .SH XIV. Y2K Compliance in libpng
 
-February 25, 2012
+February 27, 2012
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -5839,7 +5839,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.5.10beta02 - February 25, 2012:
+Libpng version 1.5.10beta02 - February 27, 2012:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -5862,7 +5862,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.10beta02, February 25, 2012, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.10beta02, February 27, 2012, 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
@@ -5961,7 +5961,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-February 25, 2012
+February 27, 2012
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 50ab7ec..2dfef3f 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "February 24, 2012"
+.TH LIBPNGPF 3 "February 27, 2012"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.5.10beta02
 (private functions)
diff --git a/png.5 b/png.5
index 7f607f3..a1f376a 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "February 24, 2012"
+.TH PNG 5 "February 27, 2012"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 6b0dac5..e840d84 100644
--- a/png.c
+++ b/png.c
@@ -655,13 +655,13 @@
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.5.10beta02 - February 24, 2012" PNG_STRING_NEWLINE \
+     "libpng version 1.5.10beta02 - February 27, 2012" 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 1.5.10beta02 - February 24, 2012\
+      return "libpng version 1.5.10beta02 - February 27, 2012\
       Copyright (c) 1998-2011 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
diff --git a/png.h b/png.h
index ca940f6..9deee51 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.5.10beta02 - February 24, 2012
+ * libpng version 1.5.10beta02 - February 27, 2012
  * Copyright (c) 1998-2012 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 1.5.10beta02 - February 24, 2012: Glenn
+ *   libpng versions 0.97, January 1998, through 1.5.10beta02 - February 27, 2012: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -204,7 +204,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.5.10beta02, February 24, 2012, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.10beta02, February 27, 2012, are
  * Copyright (c) 2004, 2006-2012 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:
@@ -316,7 +316,7 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    February 24, 2012
+ *    February 27, 2012
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
@@ -382,7 +382,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.5.10beta02"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.5.10beta02 - February 24, 2012\n"
+     " libpng version 1.5.10beta02 - February 27, 2012\n"
 
 #define PNG_LIBPNG_VER_SONUM   15
 #define PNG_LIBPNG_VER_DLLNUM  15
diff --git a/pngconf.h b/pngconf.h
index b171877..cb64ffa 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.5.10beta02 - February 24, 2012
+ * libpng version 1.5.10beta02 - February 27, 2012
  *
  * Copyright (c) 1998-2012 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngusr.dfa b/pngusr.dfa
new file mode 100644
index 0000000..9d39564
--- /dev/null
+++ b/pngusr.dfa
@@ -0,0 +1,14 @@
+# pngusr.dfa
+#
+# Build time configuration of libpng
+#
+# Enter build configuration options in this file
+#
+# Security settings: by default these limits are unset, you can change them
+# here by entering the appropriate values as #defines preceded by '@' (to cause,
+# them to be passed through to the build of pnglibconf.h), for example:
+#
+# @# define PNG_USER_WIDTH_MAX 1000000
+# @# define PNG_USER_HEIGHT_MAX 1000000
+# @# define PNG_USER_CHUNK_CACHE_MAX 128
+# @# define PNG_USER_CHUNK_MALLOC_MAX 8000000
diff --git a/projects/vstudio/readme.txt b/projects/vstudio/readme.txt
index 8532f99..a504a45 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.5.10beta02 - February 24, 2012
+libpng version 1.5.10beta02 - February 27, 2012
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index bd8b477..30b6f80 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.5.10beta02 - February 24, 2012
+ * libpng version 1.5.10beta02 - February 27, 2012
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index 4ba37e2..4442de3 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.5.10beta02 - February 24, 2012
+Makefiles for  libpng version 1.5.10beta02 - February 27, 2012
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
diff --git a/scripts/options.awk b/scripts/options.awk
index a8dff04..9ef98bc 100755
--- a/scripts/options.awk
+++ b/scripts/options.awk
@@ -42,7 +42,7 @@
    comment=start cx             # Comment start
    cend="*/" end                # Comment end
    def=start "#define PNG_" ct  # Arbitrary define
-   sup=ct "_SUPPORTED" end      # end supported option
+   sup=ct "_SUPPORTED 1" end    # end supported option
    und=comment "#undef PNG_" ct # Unsupported option
    une=ct "_SUPPORTED" cend     # end unsupported option
    error=start "ERROR:"         # error message
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index 8e81d80..5846fac 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -3,7 +3,7 @@
 
 /* pnglibconf.h - library build configuration */
 
-/* Libpng 1.5.10beta02 - February 25, 2012 */
+/* Libpng 1.5.10beta02 - February 27, 2012 */
 
 /* Copyright (c) 1998-2011 Glenn Randers-Pehrson */