Batman movies?????

I know the Dark Knight's villain will be the Joker played by Heath Ledger(may he rest in peace). But who do u think the next movie villain is? I heard talk that it might be Two-Face. Wouldnt it be cool if they did one with Poison Ivy? That would be a good movie. When do u think they are gonna add Robin? I dont think they should make Catwoman a villain in this series because of the recent movie Catwoman. If they do, they should keep Halle Berry to play her.