diff --git a/ANNOUNCE b/ANNOUNCE
index 0031da4..9c2cc25 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -748,7 +748,7 @@
 
 Version 1.7.0beta56 [March 11, 2015]
   Updated CMakeLists.txt to add OSX framework, change YES/NO to ON/OFF
-    for consistency (Alexey Petruchik).
+    for consistency, and remove some useless tests (Alexey Petruchik).
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/CHANGES b/CHANGES
index 764f4f6..5f2f600 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5038,7 +5038,7 @@
 
 Version 1.7.0beta56 [March 11, 2015]
   Updated CMakeLists.txt to add OSX framework, change YES/NO to ON/OFF
-    for consistency (Alexey Petruchik).
+    for consistency, and remove some useless tests (Alexey Petruchik).
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 80e6e3e..91613ce 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,8 +30,7 @@
     PATHS /usr/lib /usr/local/lib
   )
   if(NOT M_LIBRARY)
-    message(STATUS
-      "math library 'libm' not found - floating point support disabled")
+    message(STATUS "math lib 'libm' not found; floating point support disabled")
   endif()
 else()
   # not needed on windows
@@ -39,30 +38,14 @@
 endif()
 
 # COMMAND LINE OPTIONS
-if(DEFINED PNG_SHARED)
-  option(PNG_SHARED "Build shared lib" ${PNG_SHARED})
-else()
-  option(PNG_SHARED "Build shared lib" ON)
-endif()
-if(DEFINED PNG_STATIC)
-  option(PNG_STATIC "Build static lib" ${PNG_STATIC})
-else()
-  option(PNG_STATIC "Build static lib" ON)
-endif()
-if(DEFINED PNG_FRAMEWORK)
-  option(PNG_FRAMEWORK "Build OS X framework" ${PNG_FRAMEWORK})
-else()
-  option(PNG_FRAMEWORK "Build OS X framework" OFF)
-endif()
-if(DEFINED PNG_TESTS)
-  option(PNG_TESTS  "Build libpng tests" ${PNG_TESTS})
-else()
-  option(PNG_TESTS  "Build libpng tests" ON)
-endif()
+option(PNG_SHARED "Build shared lib" ON)
+option(PNG_STATIC "Build static lib" ON)
+option(PNG_TESTS  "Build libpng tests" ON)
 
 # Many more configuration options could be added here
-option(PNG_DEBUG         "Build with debug output" OFF)
-option(PNGARG            "Disable ANSI-C prototypes" OFF)
+option(PNG_FRAMEWORK "Build OS X framework" OFF)
+option(PNG_DEBUG     "Build with debug output" OFF)
+option(PNGARG        "Disable ANSI-C prototypes" OFF)
 
 # SET LIBNAME
 set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
diff --git a/LICENSE b/LICENSE
index cbb377a..468b57f 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 1.7.0beta56, March 9, 2015, are
+libpng versions 1.2.6, August 15, 2004, through 1.7.0beta56, March 11, 2015, are
 Copyright (c) 2004, 2006-2015 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
-March 9, 2015
+March 11, 2015
diff --git a/README b/README
index 0ea13cd..d605d19 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.7.0beta56 - March 9, 2015 (shared library 17.0)
+README for libpng version 1.7.0beta56 - March 11, 2015 (shared library 17.0)
 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 f1fb018..da12991 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 1.7.0beta56 - March 9, 2015
+ libpng version 1.7.0beta56 - March 11, 2015
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2015 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.7.0beta56 - March 9, 2015
+ libpng versions 0.97, January 1998, through 1.7.0beta56 - March 11, 2015
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2015 Glenn Randers-Pehrson
 
@@ -5336,7 +5336,7 @@
 
 XVII. Y2K Compliance in libpng
 
-March 9, 2015
+March 11, 2015
 
 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 bd49ba9..4283f4a 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "March 9, 2015"
+.TH LIBPNG 3 "March 11, 2015"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0beta56
 .SH SYNOPSIS
@@ -494,7 +494,7 @@
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.7.0beta56 - March 9, 2015
+ libpng version 1.7.0beta56 - March 11, 2015
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2015 Glenn Randers-Pehrson
@@ -505,7 +505,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.7.0beta56 - March 9, 2015
+ libpng versions 0.97, January 1998, through 1.7.0beta56 - March 11, 2015
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2015 Glenn Randers-Pehrson
 
@@ -5830,7 +5830,7 @@
 
 .SH XVII. Y2K Compliance in libpng
 
-March 9, 2015
+March 11, 2015
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -6147,7 +6147,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.7.0beta56 - March 9, 2015:
+Libpng version 1.7.0beta56 - March 11, 2015:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -6170,7 +6170,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.7.0beta56, March 9, 2015, are
+libpng versions 1.2.6, August 15, 2004, through 1.7.0beta56, March 11, 2015, 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
@@ -6269,7 +6269,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-March 9, 2015
+March 11, 2015
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index bca26fd..9e52a8f 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "March 9, 2015"
+.TH LIBPNGPF 3 "March 11, 2015"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0beta56
 (private functions)
diff --git a/png.5 b/png.5
index b5dc685..0374b7f 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "March 9, 2015"
+.TH PNG 5 "March 11, 2015"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 9a14272..66bd633 100644
--- a/png.c
+++ b/png.c
@@ -688,13 +688,13 @@
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.7.0beta56 - March 9, 2015" PNG_STRING_NEWLINE \
+     "libpng version 1.7.0beta56 - March 11, 2015" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2015 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 1.7.0beta56 - March 9, 2015\
+      return "libpng version 1.7.0beta56 - March 11, 2015\
       Copyright (c) 1998-2015 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 61d64f1..d02002c 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.7.0beta56, March 9, 2015
+ * libpng version 1.7.0beta56, March 11, 2015
  *
  * Copyright (c) 1998-2015 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -12,7 +12,7 @@
  * 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 1.7.0beta56, March 9, 2015: Glenn
+ *   libpng versions 0.97, January 1998, through 1.7.0beta56, March 11, 2015: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -248,7 +248,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.7.0beta56, March 9, 2015, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.7.0beta56, March 11, 2015, are
  * Copyright (c) 2004, 2006-2015 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:
@@ -360,7 +360,7 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    March 9, 2015
+ *    March 11, 2015
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
@@ -430,7 +430,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.7.0beta56"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.7.0beta56 - March 9, 2015\n"
+     " libpng version 1.7.0beta56 - March 11, 2015\n"
 
 #define PNG_LIBPNG_VER_SONUM   17
 #define PNG_LIBPNG_VER_DLLNUM  17
diff --git a/pngconf.h b/pngconf.h
index cba11d7..9fc4678 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.7.0beta56, March 9, 2015
+ * libpng version 1.7.0beta56, March 11, 2015
  *
  * Copyright (c) 1998-2015 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 4f02caa..e8bf762 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.7.0beta56 - March 9, 2015
+libpng version 1.7.0beta56 - March 11, 2015
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index e8bba29..e3c3039 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.7.0beta56 - March 9, 2015
+ * libpng version 1.7.0beta56 - March 11, 2015
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index 06a9ea2..02dd148 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.7.0beta56 - March 9, 2015
+Makefiles for  libpng version 1.7.0beta56 - March 11, 2015
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index 60550f6..797f50f 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -2,7 +2,7 @@
 
 /* pnglibconf.h - library build configuration */
 
-/* Libpng version 1.7.0beta56 - March 9, 2015 */
+/* Libpng version 1.7.0beta56 - March 11, 2015 */
 
 /* Copyright (c) 1998-2014 Glenn Randers-Pehrson */