Bump to 3.3.0rc3.
diff --git a/README b/README
index 81f0d20..19451ab 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-This is Python version 3.3.0 release candidate 2
+This is Python version 3.3.0 release candidate 3
 ================================================
 
 Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,