diff --git a/LICENSE b/LICENSE
index 9daa4fa..8869317 100644
--- a/LICENSE
+++ b/LICENSE
@@ -10,7 +10,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.0.7, July 1, 2000 through 1.6.29beta02, January 12, 2017 are
+libpng versions 1.0.7, July 1, 2000 through 1.6.29beta02, February 22, 2017 are
 Copyright (c) 2000-2002, 2004, 2006-2017 Glenn Randers-Pehrson, are
 derived from libpng-1.0.6, and are distributed according to the same
 disclaimer and license as libpng-1.0.6 with the following individuals
@@ -129,4 +129,4 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-January 12, 2017
+February 22, 2017
diff --git a/TODO b/TODO
index fe9de4b..36d6092 100644
--- a/TODO
+++ b/TODO
@@ -25,5 +25,6 @@
 Investigate pre-incremented loop counters and other loop constructions.
 Add interpolated method of handling interlacing.
 Extend pngvalid.c to validate more of the libpng transformations.
+Refactor preprocessor conditionals to compile entire statements
 
 */
diff --git a/libpng-manual.txt b/libpng-manual.txt
index 45cabc4..b06f358 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 1.6.29beta02 - January 12, 2017
+ libpng version 1.6.29beta02 - February 22, 2017
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2016 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.6.29beta02 - January 12, 2017
+ libpng versions 0.97, January 1998, through 1.6.29beta02 - February 22, 2017
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2016 Glenn Randers-Pehrson
 
diff --git a/libpng.3 b/libpng.3
index 727b17c..cd8ab09 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "January 12, 2017"
+.TH LIBPNG 3 "February 22, 2017"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.6.29beta02
 .SH SYNOPSIS
@@ -510,7 +510,7 @@
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.6.29beta02 - January 12, 2017
+ libpng version 1.6.29beta02 - February 22, 2017
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2016 Glenn Randers-Pehrson
@@ -521,7 +521,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.6.29beta02 - January 12, 2017
+ libpng versions 0.97, January 1998, through 1.6.29beta02 - February 22, 2017
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2016 Glenn Randers-Pehrson
 
@@ -6023,7 +6023,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.6.29beta02 - January 12, 2017:
+Libpng version 1.6.29beta02 - February 22, 2017:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -6048,7 +6048,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.0.7, July 1, 2000 through 1.6.29beta02, January 12, 2017 are
+libpng versions 1.0.7, July 1, 2000 through 1.6.29beta02, February 22, 2017 are
 Copyright (c) 2000-2002, 2004, 2006-2017 Glenn Randers-Pehrson, are
 derived from libpng-1.0.6, and are distributed according to the same
 disclaimer and license as libpng-1.0.6 with the following individuals
@@ -6175,7 +6175,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-January 12, 2017
+February 22, 2017
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index a1626d9..58e867b 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "January 12, 2017"
+.TH LIBPNGPF 3 "February 22, 2017"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.6.29beta02
 (private functions)
diff --git a/png.5 b/png.5
index db5cf43..e3f9eac 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "January 12, 2017"
+.TH PNG 5 "February 22, 2017"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 71839dd..0bcbda1 100644
--- a/png.c
+++ b/png.c
@@ -776,14 +776,14 @@
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-      "libpng version 1.6.29beta02 - January 12, 2017" PNG_STRING_NEWLINE \
+      "libpng version 1.6.29beta02 - February 22, 2017" PNG_STRING_NEWLINE \
       "Copyright (c) 1998-2002,2004,2006-2017 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 1.6.29beta02 - January 12, 2017\
+   return "libpng version 1.6.29beta02 - February 22, 2017\
       Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
diff --git a/pngconf.h b/pngconf.h
index 17b51e1..dce4160 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.6.29beta02, January 12, 2017
+ * libpng version 1.6.29beta02, February 22, 2017
  *
  * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/projects/vstudio/README.txt b/projects/vstudio/README.txt
index 3294497..1c0c7d3 100644
--- a/projects/vstudio/README.txt
+++ b/projects/vstudio/README.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.6.29beta02 - January 12, 2017
+libpng version 1.6.29beta02 - February 22, 2017
 
 Copyright (c) 2010,2013,2015 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index ebe855b..bfc6457 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.6.29beta02 - January 12, 2017
+ * libpng version 1.6.29beta02 - February 22, 2017
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index 2039f92..f26203c 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.6.29beta02 - January 12, 2017
+Makefiles for  libpng version 1.6.29beta02 - February 22, 2017
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index 1cc5ed0..982465d 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -2,7 +2,7 @@
 
 /* pnglibconf.h - library build configuration */
 
-/* Libpng version 1.6.29beta02 - January 12, 2017 */
+/* Libpng version 1.6.29beta02 - February 22, 2017 */
 
 /* Copyright (c) 1998-2015 Glenn Randers-Pehrson */