I can't wait for this game.
I would buy the game if no improvements were made from Arkham Asylum but it looks like they made some good improvements.
See 1:14 for what looks like the new and improved dective mode. Dective mode was my only complaint from AA, I spent most of the game in it so I never saw all the details that went into the enviroments.
And Mark Hamil is doing the voice of the Joker again!