There's been rumblings over a new Batman game set for this year for a while. It makes sense that we could expect another one as people will buy a Batman 'Arkham' game. Part of the rumblings was Rocksteady would be back developing the final game in the Arkham series.
Apparently an image was leaked out in the UK showing the game as titled, Batman: Arkham Knight.
You can barely read but it says the Batmobile will be driveable. That sounds really cool. We'll also be facing Scarecrow again. Interestingly enough, there is no mention of the game being available on PS3 or Xbox 360.
Apparently there may be an official announcement during this week's DC All Access video which is going up today.
Gameinformer just revealed their April cover. That makes it official.