Look at the image I posted above. It has the PS3 and 360 logo on it. If that image is legit (and it should be since it was with IGN's other leaked images), then that would throw a wrench in the idea that it's still timed exclusive. There'd be no reason for them to put the PS3 logo on there if that were the direction that they were heading in with the series.
This is also a legitimate leak that points to it possibly changing. It just seems pointless to have kept that.