If you do, you're going to be bitterly disappointed and that bitterness is going to stay in your mouth quite possibly until 2012 as Square Enix just "cant commit" to 2011 at this point.
Darryl had the opportunity to talk to game producer Yoshinori Kitase at GamesCom and probed him about the issue, to which he replied,
We have no release date information to update. Unfortunately we can't say anything about that. We can't commit ourselves to 2011 either.
Final Fantasy Versus XIII was announced way back many moons ago at E3 in 2006 and is one of the more anticipated titles among the Fabula Nova Crystallis project. There's been barely any news on it with maybe a couple of scans here and there, however Tetsuya Nomura has confirmed that it will be at the Tokyo Game Show this year.
Source: Gaming Union