A fan-made logo.
Creative Assembly have revealed that the next Total War title will be announced on 6 July at the Rezzed gaming convention. At the same time a number of PC gaming magazines have said that there will be a big reveal in their July issues. One of them, PC Gameplay, went as far as listing the contents for their next issue and confirming there will be an article on Total War: Rome II (or Rome II: Total War for those who preferred Creative Assembly's old-school naming system).
Excellent news. Rome: Total War was an excellent strategy game (well, once the patches upgraded the AI to something more formidable) and the last title in the series to garner near-universal praise. We can assume that Rome II will have vastly superior graphics and will likely employ the same format as the recent Empire, Napoleon and Shogun 2 (apparently it will continue to use the Warscape engine of those games) games by having both naval and ground battles, as well as possibly combined-arms operations. Expect more news in a couple of weeks' time when the formal announcement is made.