Didnt dark soulds come to the 360, what makes people think there going back to PS only?
Besides all the insiders and evidence saying it's ps4 exclusive, Beast souls is said to be either Demon souls 2 or a spin off of it. Demons Souls is owned by Sony so it will never come to Xbox. Also Sony Japan is working on it as well if you need any more damning proof that it is a PlayStation game.