Another forum goer notes that Total War developer Creative Assembly will be at this year's Rezzed exposition in Brighton on July 6 and 7. The next PC PowerPlay, meanwhile, goes on sale July 18.
The studio is supposed to be discussing "the future of Total War," so it seems likely that a sequel is in the cards. A lot has changed since Rome: Total War was first released back in 2004. Notably, the naming convention has been flipped, meaning a sequel will probably be called Total War: Rome 2.