Revealed at PAX
[Update: We've acquired a weird piece of art for the game that Behemoth is calling "Game 4."]
The Behemoth is apparently working on an undisclosed project for the Xbox One, Destructoid has learned while attending PAX East. No details were given, but it will be playable this year, and there will be more info doled out at major cons like SDCC and Pax Prime.
Expect more information as we get it, but since this is Behemoth we're talking about -- it may be a long time before we get to play the final build.