Just think about it, this is a first person game using the move coming out of Sony. PS4 is here and the game still has no date for PS3. Amazon cancelled all preorders spurring rumors of the games cancelation but Sony say its still in development, so maybe its just that Until Dawn (PS3) no longer exists.
It only makes sense that its been moved to PS4 and will support Project Morpheus, why else would they delay a PS3 game for so long, especially into the PS4's life.
Heres the announce trailer just so you can see what the game is like