Apparently on the 1up Yours podcast Shane mentions that representatives told him "Final Fantasy XIII on 360 announcement swung the ball towards Microsoft. At Square Enix's Japan event in 2 weeks, they will swing the ball back towards Sony".

Well this announcement does coincide with the FFVII announcement doesn't it. I do have the suspicion that it'll be something lame like FFVII appearing on the PSN. But that wouldn't be huge or shocking would it. Ill let you lot decide.