Here is a comment about a patch for RTW from the Shogun himself on the .COM boards,

Hi guys

...

As for Rome: Total War patch 1.3 This is virtually ready to go and should be available for download in around a week (as promised). This patch is for Rome only and fixes the bugs that have been address in BI including the Load / Save issue. You will also need this patch to play online against BI players.

Enjoy BI and have a great weekend.

Shogun

.COM Source thread

They seem to have held done exactly what they said they would which is put out a patch about a week post release of BI. That's great news...
Thanks Guys