from the developer's talk around the consessions required to be made on ps4 i'll consider this a next gen exclusive. regardless of cross gen status this was still in the list wars for launch titles and the second most important one.I think you misunderstood it. This game was made for PS4 and focused on that for a while, they shifted to cross gen and added some enhancements recently but its still a primary PS4 game.
demon's souls need to be a launch title now.
It doesn't need to but it would be a huge help. I think it wil be.