Improved graphics and physics. Other than that, there's been no mention of exclusive content for the PS4 version (aside from the PS4's new functions like sharing and such).
It's hard to tell since we haven't seen all ps4 features. Plus, BlackFlag was just announced and they haven't said anything on the topic. They did mention that current-gen version and next-gen versions are made by two different teams, so expect some differences.
I'm guessing that it'll have better graphics and different controls since ps4 controler has new features that could be used in the game.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.