@Graham Laing
"Removed the entry in the 1st post above about a possible XBox 360 Patch 3. I can find no reference to it, and there are no patch notes on their blog apart from those already announced and posted above."
There was a patch, just because there is no official word about it from CM doesn't mean it's not real. They do not have a forum at the moment and that blog is pretty sparse with info.
here is another thread about the recent xbox 360 patch link