diff --git a/ChangeLog b/ChangeLog
index fd84d2a..8a887b0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-31  Jakub Sejdak  <jakub.sejdak@phoesys.com>
 
 	* config.sub: Add support for Phoenix-RTOS targets.
diff --git a/boehm-gc/ChangeLog b/boehm-gc/ChangeLog
index 5e7641a..d430f1d 100644
--- a/boehm-gc/ChangeLog
+++ b/boehm-gc/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/config/ChangeLog b/config/ChangeLog
index 5cb6f47..a446126 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/contrib/ChangeLog b/contrib/ChangeLog
index d90d993..2cd87e7 100644
--- a/contrib/ChangeLog
+++ b/contrib/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/contrib/header-tools/ChangeLog b/contrib/header-tools/ChangeLog
index 9972e03..2cbddda 100644
--- a/contrib/header-tools/ChangeLog
+++ b/contrib/header-tools/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/contrib/reghunt/ChangeLog b/contrib/reghunt/ChangeLog
index f99fe27..b17f310 100644
--- a/contrib/reghunt/ChangeLog
+++ b/contrib/reghunt/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/contrib/regression/ChangeLog b/contrib/regression/ChangeLog
index a33fa9c..b3b7be7 100644
--- a/contrib/regression/ChangeLog
+++ b/contrib/regression/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/fixincludes/ChangeLog b/fixincludes/ChangeLog
index 9554224..73d229c 100644
--- a/fixincludes/ChangeLog
+++ b/fixincludes/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-12-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	Backport from mainline
diff --git a/gcc/BASE-VER b/gcc/BASE-VER
index 024b066..798e389 100644
--- a/gcc/BASE-VER
+++ b/gcc/BASE-VER
@@ -1 +1 @@
-6.2.1
+6.3.0
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8b067fe..06ebfb1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-12-14  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/59874
diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index 7ecbd63..803e9c5 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-12-07  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Enumeration_Subtype>:
diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog
index 6248e6c..fb1e99d 100644
--- a/gcc/c-family/ChangeLog
+++ b/gcc/c-family/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-10-28  Aldy Hernandez  <aldyh@redhat.com>
 
 	PR debug/77773
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog
index a3837c2..68fccd8 100644
--- a/gcc/c/ChangeLog
+++ b/gcc/c/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-11-05  Martin Sebor  <msebor@redhat.com>
 
 	Backport from trunk.
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index d23864e..8f01f83 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-12-14  Nathan Sidwell  <nathan@acm.org>
 
 	PR c++/78701
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index 76d123c..c54de23 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-12-09  Janus Weil  <janus@gcc.gnu.org>
 
 	Backport from trunk
diff --git a/gcc/go/ChangeLog b/gcc/go/ChangeLog
index eabd8f3..cbf9bcd 100644
--- a/gcc/go/ChangeLog
+++ b/gcc/go/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/gcc/java/ChangeLog b/gcc/java/ChangeLog
index de64a17..156b365 100644
--- a/gcc/java/ChangeLog
+++ b/gcc/java/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-09-22  Richard Biener  <rguenther@suse.de>
 
 	* class.c (push_super_field): Set DECL_CONTEXT.
diff --git a/gcc/jit/ChangeLog b/gcc/jit/ChangeLog
index dd93c9d..c29fe43 100644
--- a/gcc/jit/ChangeLog
+++ b/gcc/jit/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/gcc/lto/ChangeLog b/gcc/lto/ChangeLog
index 9e997af..2f3032c 100644
--- a/gcc/lto/ChangeLog
+++ b/gcc/lto/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-11-23  Richard Biener  <rguenther@suse.de>
 
 	Backport from mainline
diff --git a/gcc/objc/ChangeLog b/gcc/objc/ChangeLog
index b1b2984..e1c11dd 100644
--- a/gcc/objc/ChangeLog
+++ b/gcc/objc/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/gcc/objcp/ChangeLog b/gcc/objcp/ChangeLog
index 30393bb..f598081 100644
--- a/gcc/objcp/ChangeLog
+++ b/gcc/objcp/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/gcc/po/ChangeLog b/gcc/po/ChangeLog
index 6bbc95d..9bcce91 100644
--- a/gcc/po/ChangeLog
+++ b/gcc/po/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-12-16  Joseph Myers  <joseph@codesourcery.com>
 
 	* fr.po: Update.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index f1fcb71..d3c6533 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-12-15  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/78540
diff --git a/gnattools/ChangeLog b/gnattools/ChangeLog
index b57d12a..bacbe80 100644
--- a/gnattools/ChangeLog
+++ b/gnattools/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/gotools/ChangeLog b/gotools/ChangeLog
index 51f538a..8e71b05 100644
--- a/gotools/ChangeLog
+++ b/gotools/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/include/ChangeLog b/include/ChangeLog
index d8ea905..72a60fd 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/intl/ChangeLog b/intl/ChangeLog
index be4ae0d..f9d567c 100644
--- a/intl/ChangeLog
+++ b/intl/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libada/ChangeLog b/libada/ChangeLog
index 0c230f0..4c642cc 100644
--- a/libada/ChangeLog
+++ b/libada/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libatomic/ChangeLog b/libatomic/ChangeLog
index 5128376..5aa7218 100644
--- a/libatomic/ChangeLog
+++ b/libatomic/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libbacktrace/ChangeLog b/libbacktrace/ChangeLog
index 8c56695..4cb639b 100644
--- a/libbacktrace/ChangeLog
+++ b/libbacktrace/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libcc1/ChangeLog b/libcc1/ChangeLog
index 4e416d0..a8732b2 100644
--- a/libcc1/ChangeLog
+++ b/libcc1/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libcilkrts/ChangeLog b/libcilkrts/ChangeLog
index 982ac43..13ed27e 100644
--- a/libcilkrts/ChangeLog
+++ b/libcilkrts/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
index c921c90..2d0de66 100644
--- a/libcpp/ChangeLog
+++ b/libcpp/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libcpp/po/ChangeLog b/libcpp/po/ChangeLog
index 529f853..821b587 100644
--- a/libcpp/po/ChangeLog
+++ b/libcpp/po/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-10-29  Joseph Myers  <joseph@codesourcery.com>
 
 	* eo.po: Update.
diff --git a/libdecnumber/ChangeLog b/libdecnumber/ChangeLog
index 806d527..f4ed1fc 100644
--- a/libdecnumber/ChangeLog
+++ b/libdecnumber/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libffi/ChangeLog b/libffi/ChangeLog
index 8db84eb..8e99847 100644
--- a/libffi/ChangeLog
+++ b/libffi/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index e5645f5..8e5e308 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-12-11  Iain Sandoe  <iain@codesourcery.com>
 
 	Backport from mainline
diff --git a/libgcc/config/libbid/ChangeLog b/libgcc/config/libbid/ChangeLog
index 3a3e8de..46d343e 100644
--- a/libgcc/config/libbid/ChangeLog
+++ b/libgcc/config/libbid/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog
index 1efa9c2..66cef90 100644
--- a/libgfortran/ChangeLog
+++ b/libgfortran/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-10-31  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	Backport from trunk
diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index 61515d7..8841636 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-12-07  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from mainline
diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index 4bdb1a2..240138f 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-12-13  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/78761
diff --git a/libitm/ChangeLog b/libitm/ChangeLog
index e408691..66a78f5 100644
--- a/libitm/ChangeLog
+++ b/libitm/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libjava/ChangeLog b/libjava/ChangeLog
index a9dfa26..9447ebd 100644
--- a/libjava/ChangeLog
+++ b/libjava/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libjava/classpath/ChangeLog b/libjava/classpath/ChangeLog
index e2ae481..862002d 100644
--- a/libjava/classpath/ChangeLog
+++ b/libjava/classpath/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libjava/libltdl/ChangeLog b/libjava/libltdl/ChangeLog
index f0cf444..2372266 100644
--- a/libjava/libltdl/ChangeLog
+++ b/libjava/libltdl/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libmpx/ChangeLog b/libmpx/ChangeLog
index 23404f5..41d4e0a 100644
--- a/libmpx/ChangeLog
+++ b/libmpx/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libobjc/ChangeLog b/libobjc/ChangeLog
index 42bbe88..88edc0d 100644
--- a/libobjc/ChangeLog
+++ b/libobjc/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/liboffloadmic/ChangeLog b/liboffloadmic/ChangeLog
index 211f136..54562bf 100644
--- a/liboffloadmic/ChangeLog
+++ b/liboffloadmic/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libquadmath/ChangeLog b/libquadmath/ChangeLog
index c570bf9..e751401 100644
--- a/libquadmath/ChangeLog
+++ b/libquadmath/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libsanitizer/ChangeLog b/libsanitizer/ChangeLog
index 7b2f1d1..505e58d 100644
--- a/libsanitizer/ChangeLog
+++ b/libsanitizer/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-11-16  Markus Trippelsdorf  <markus@trippelsdorf.de>
 
 	PR sanitizer/78294
diff --git a/libssp/ChangeLog b/libssp/ChangeLog
index 708f729..68dcad6 100644
--- a/libssp/ChangeLog
+++ b/libssp/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 43c9b119f0..1ceed95 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-12-12  Jonathan Wakely  <jwakely@redhat.com>
 
 	Backport from mainline
diff --git a/libvtv/ChangeLog b/libvtv/ChangeLog
index a9ca617..ee84d9d 100644
--- a/libvtv/ChangeLog
+++ b/libvtv/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/lto-plugin/ChangeLog b/lto-plugin/ChangeLog
index 4fae3a5..2a2f8f8 100644
--- a/lto-plugin/ChangeLog
+++ b/lto-plugin/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/maintainer-scripts/ChangeLog b/maintainer-scripts/ChangeLog
index 8a6fabd..a3c8683 100644
--- a/maintainer-scripts/ChangeLog
+++ b/maintainer-scripts/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.
diff --git a/zlib/ChangeLog b/zlib/ChangeLog
index c4c16ad..d295c2d 100644
--- a/zlib/ChangeLog
+++ b/zlib/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-21  Release Manager
+
+	* GCC 6.3.0 released.
+
 2016-08-22  Release Manager
 
 	* GCC 6.2.0 released.