I know it isn't the game, but it is based on the Arkham universe. Featuring Kevin Conroy as Batman and Troy Barker as the Joker (Arkham Origins Joker). They also brought back the origina actress who played Amanda Waller in the animated series (and Arkham Origins) to reprise her role as Waller. This looks good.
Saw this the other day ... looks GREAT! I love these original universe Batman animated films ... they are extremely well done. I'm gonna check this out as soon as it comes out, because I'm such a huge Batman nerd.
Also, got done with the latest "ARKHAM ORIGINS" DLC - "COLD COLD HEART". Nice little DLC to play to hold us over till "ARKHAM KNIGHT" this October. Check it out if you ever have the chance.
Here is an inside look at Assault on Arkham:
New Arkham Knight trailer
The Batmobile transforms: