diff --git a/LICENSE b/LICENSE
index ce35504..c6c233e 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 1.6.0beta13, February 19, 2012, are
+libpng versions 1.2.6, August 15, 2004, through 1.6.0beta13, February 24, 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 19, 2012
+February 24, 2012
diff --git a/README b/README
index ddf1d49..6f2ef2c 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.6.0beta13 - February 19, 2012 (shared library 16.0)
+README for libpng version 1.6.0beta13 - February 24, 2012 (shared library 16.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
diff --git a/contrib/pngminim/decoder/pngusr.dfa b/contrib/pngminim/decoder/pngusr.dfa
index 70d528b..e8f2002 100644
--- a/contrib/pngminim/decoder/pngusr.dfa
+++ b/contrib/pngminim/decoder/pngusr.dfa
@@ -37,3 +37,5 @@
 option STDIO on
 option READ_EXPAND on
 option READ_STRIP_16_TO_8 on
+option USER_LIMITS on
+@#define PNG_SECURE
diff --git a/libpng-manual.txt b/libpng-manual.txt
index 693d7df..64d8975 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 1.6.0beta13 - February 19, 2012
+ libpng version 1.6.0beta13 - February 24, 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 1.6.0beta13 - February 19, 2012
+ libpng versions 0.97, January 1998, through 1.6.0beta13 - February 24, 2012
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -4979,7 +4979,7 @@
 
 XVI. Y2K Compliance in libpng
 
-February 19, 2012
+February 24, 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 4187f36..22a313e 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "February 19, 2012"
+.TH LIBPNG 3 "February 24, 2012"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.6.0beta13
 .SH SYNOPSIS
@@ -1003,7 +1003,7 @@
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.6.0beta13 - February 19, 2012
+ libpng version 1.6.0beta13 - February 24, 2012
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -1014,7 +1014,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.6.0beta13 - February 19, 2012
+ libpng versions 0.97, January 1998, through 1.6.0beta13 - February 24, 2012
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -5983,7 +5983,7 @@
 
 .SH XVI. Y2K Compliance in libpng
 
-February 19, 2012
+February 24, 2012
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -6251,7 +6251,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.6.0beta13 - February 19, 2012:
+Libpng version 1.6.0beta13 - February 24, 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).
 
@@ -6274,7 +6274,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.6.0beta13, February 19, 2012, are
+libpng versions 1.2.6, August 15, 2004, through 1.6.0beta13, February 24, 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
@@ -6373,7 +6373,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-February 19, 2012
+February 24, 2012
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 77f30e2..4a4f702 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "February 19, 2012"
+.TH LIBPNGPF 3 "February 24, 2012"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.6.0beta13
 (private functions)
diff --git a/png.5 b/png.5
index ec587cd..7f607f3 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "February 19, 2012"
+.TH PNG 5 "February 24, 2012"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index e21c04c..170f1f9 100644
--- a/png.c
+++ b/png.c
@@ -762,13 +762,13 @@
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.6.0beta13 - February 19, 2012" PNG_STRING_NEWLINE \
+     "libpng version 1.6.0beta13 - February 24, 2012" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2012 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 1.6.0beta13 - February 19, 2012\
+      return "libpng version 1.6.0beta13 - February 24, 2012\
       Copyright (c) 1998-2012 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 bf49bf8..42b8e5e 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.6.0beta13 - February 19, 2012
+ * libpng version 1.6.0beta13 - February 24, 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 1.6.0beta13 - February 19, 2012: Glenn
+ *   libpng versions 0.97, January 1998, through 1.6.0beta13 - February 24, 2012: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -198,7 +198,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.6.0beta13, February 19, 2012, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.6.0beta13, February 24, 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:
@@ -310,7 +310,7 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    February 19, 2012
+ *    February 24, 2012
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
@@ -376,7 +376,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.6.0beta13"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.6.0beta13 - February 19, 2012\n"
+     " libpng version 1.6.0beta13 - February 24, 2012\n"
 
 #define PNG_LIBPNG_VER_SONUM   16
 #define PNG_LIBPNG_VER_DLLNUM  16
diff --git a/pngusr.dfa b/pngusr.dfa
index f366cd6..9d39564 100644
--- a/pngusr.dfa
+++ b/pngusr.dfa
@@ -5,12 +5,10 @@
 # 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)
-@#ifdef PNG_SECURE
-@  /* Relatively secure values */
-@# 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
-@#endif
+# 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 60f11f2..d60b2e7 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.6.0beta13 - February 19, 2012
+libpng version 1.6.0beta13 - February 24, 2012
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index 806e42c..aa87aeb 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.6.0beta13 - February 19, 2012
+ * libpng version 1.6.0beta13 - February 24, 2012
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index 846d670..333e0df 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.6.0beta13 - February 19, 2012
+Makefiles for  libpng version 1.6.0beta13 - February 24, 2012
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile