diff --git a/CHANGES b/CHANGES
index 0d001d19e..8a035d051 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,17 @@
+===============================================================================
+                               Changes in 1.0rc1
+===============================================================================
+
+- Added support for dynamically promoted threads, which offer
+better trade-offs than the existing ULT and tasklet methods
+- Reduced the overhead of context switching
+- Fixed the Valgrind support
+- Extended the API with new blocking pool operations
+- Leverage the more efficient GCC `__atomic` builtins when available
+- Fixed a bug in the condition variable implementation
+- Fixed bugs in memory pool
+- Fixed bugs in pool operation
+
 ===============================================================================
                                Changes in 1.0b1
 ===============================================================================
diff --git a/maint/version.m4 b/maint/version.m4
index 467dfd28e..b8730385a 100644
--- a/maint/version.m4
+++ b/maint/version.m4
@@ -3,7 +3,7 @@
 # See COPYRIGHT in top-level directory.
 #
 
-m4_define([ABT_VERSION_m4],[1.0b1])dnl
+m4_define([ABT_VERSION_m4],[1.0rc1])dnl
 m4_define([ABT_RELEASE_DATE_m4],[unreleased development copy])dnl
 
 # For libtool ABI versioning rules see: