Bump to 3.3.0rc1.
diff --git a/README b/README
index eded8fd..3f0f149 100644
--- a/README
+++ b/README
@@ -1,5 +1,5 @@
-This is Python version 3.3.0 beta 2
-===================================
+This is Python version 3.3.0 release candidate 1
+================================================
 
 Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
 2012 Python Software Foundation.  All rights reserved.