Actually, I'm trying to find where I can find secret bonuses. :)
The next Batman game is called Batman: Arkham Origins , and it'll be out October 25 for PS3, Xbox 360, Wii U, and PC. It's a prequel to Arkham Asylum and Arkham City.
Arkham Origins will be developed by Warner Bros. Games Montreal, taking the reigns from Rocksteady Studios.
As you can see from the cover, Deathstroke will appear in the game.