Square Enix' line-up for Gamescom 2009 in Cologne has been announced and can be found here: http://www.eu.square-enix.com/gamescom/?id=DFF〈=en
Final Fantasy XIII and XIV are on there, so hopefully we'll finally see something substantial from XIV
What intrigues me the most though, is that they put Final Fantasy VII on their list. Maybe Square Enix will finally announce the remake we've all been lusting for since that fateful PS3 tech demo, or maybe it just means we'll be getting another compilation game. I'm not getting my hopes up just yet, but I'm keeping my fingers crossed 
Final Fantasy XIII and XIV are on there, so hopefully we'll finally see something substantial from XIV

