I've posted about this in the original Demon's Souls thread and it has been mentioned in the Dark Souls 2 thread, but I think it deserves it's own thread so we can post any new info and discuss it in one place.
It seems From and Sony are working on something for the PS4 currently called Project Beast (working title). It sure looks like Demon's Souls 2 to me.
Sauce
It sure looks like he's holding a shotgun in the second picture. At first this bothered me, but I think guns could actually work in a souls game if done right. Everything so far is pointing to this game being Demon's Souls 2 which I really, really hope is the case. It's still my favourite game in the Souls series and I would love a proper sequel for it.
Here's a little video ENB did about the new game:
As ENB mentions in the video Hidetaka Miyazaki (director/producer of Demon's Souls and the first Dark Souls) was not directly involved in Dark Souls 2 because he was working on another project and everything points to this game being that project.