What this gets me excited about is that Japan Studio is definitely going to be playing a bigger role this gen. We've had Knack and now this collaboration with From Software and surely The Last Guardian is coming out? It gives me hope that SCE London will actually be active this gen because if these two are active and participate in bringing out games and the fact they have a lot of people (400 each) this should mean any problems at Naughty Dog or SSM that one of these studios can fill in with their own games which Sony didn't have last gen.
I surely hope it's not exclusive as I'd love a next-gen Souls game on PC. If that happens hopefully they'll work with Peter Thoman to get better mod support. How sick would it be to be able to play user created zones with user created weapons and armor along with a completely customizable UI?
I seriously doubt this is exclusive to PS4. They have built up a solid fanbase now across 3 platforms(Playstation, xbox, and PC) and with a game as niche as this, it makes no sense to 1: annoy your fanbases, and 2: bypass the millions of consumers on the other platforms. If it was New IP, then maybe, but those pics are clearly a Dark souls/demon souls.