Believe it -- Sony just announced at E3 that Square-Enix will be releasing Final Fantasy XIV in 2010. The game will apparently be a sequel of sorts to XI, as it'll be the second trip of the series into the land of Massively Multiplayer Online games. It'll be available on PS3, and they called it the "only console," so a PC release is not out of the question.
There's an all-CG trailer which we'll try to have soon, and no news on gameplay or really anything else. But yes, that just happened: not only did Square-Enix announce a XIV before XIII has come out, but it's an MMO... and they're saying 2010.