A little bit more info:
"Strong support (for Revolution and DS), however, seems to be off the cards with regard to Microsoft's Xbox 360 platform right now. Speaking in an interview about the new platform with Danish magazine GameReactor, Microsoft vice president Peter Moore confirmed that "we have nothing new planned from Square Enix, and I don't think there will be anything revealed at E3."
However, he did go on to say that he would be "surprised" if any company did not develop games for Xbox 360 - and Microsoft would undoubted be quick to point out that even if Square Enix hasn't committed to the new console yet, Final Fantasy creator Hironobu Sakaguchi is already on board to create an RPG for the platform through his new studio, Mist Walker."
gameindustry.biz