According to comicbookmovie.com, the next Batman movie, called The Dark Knight, will feature a joker that's an early Batman version.
According to Producer/writer Christopher Nolan, the Joker will be depicted in the manor of his first two appearances in the early comic book run. Unlike Tim Burton's 1989 block buster, the Joker is a jewlery theif, who in the beginning works alone, before acquiring any henchmen.
Heath Ledger(Joker)has been quoted saying," It will be less about his smile, and more about his eyes".
Well, even though Heath hates F@#%# comic book movies, I think it still will be a cool movie.