I'd be shocked if it isn't PC/Xbox exclusive. I believe it's been confirmed that MachineGames Indiana Jones game is also now console exclusive.
I'm curious to see how Arkane does this. It doesn't seem like their style of game that they excel at (creative first person shooters/immersive sims), but I don't think MS has an internal studio who are obvious choice in making this type of game. Maybe Ninja Theory, but they gotta figure out how to get Hellblade out.
Arkane is interesting in that until Redfall their games are almost always critical darlings with a cult-like fanbase but never sell particularly great (Dishonoured Series, Deathloop, Prey).