Versus XIII better stay exclusive to PS3. I'm really starting to get pissed at the people working for Square.
So far they haven't done anything for the PS3 except for putting Final Fantasy VII on the PSN Store (which Sony likely forced Square's hand on that). They did just release Crystal Defenders for the PSN, but it's been on every other platform out there for months.
The Last Remnant for PS3 is pretty much cancelled. Infinite Undiscovery is 360 exclusive. They are currently looking into a 360 version of Final Fantasy XIV. Final Fantasy XIII is multiplatform outside of Japan.
I don't know why Square turned their backs on Sony. I don't know if Sony pissed them off. I really doubt Square thought for 1 second that Final Fantasy XIII wouldn't have held up sales wise on the PS3 only.
I'm even more pissed at Square because I waiting to see how they take their graphical genius and focus only on PS3. Which is why if Final Fantasy Versus XIII goes mulitplatform I will never buy another Square game again.
(at least not in anyway to give money to Square)