According to ign (they cite 2 sources) Batman 3 may begin shooting next year. Lots of behind the scenes people who worked on Dark Knight have released this rumor. Christopher and Jonathan Nolan have not signed on for the project as of this writing.
Not sure what to think of this. I’m anxious for another Batman movie, but this seems too soon. I think Christopher needs a break from Batman; another non-Batman movie hopefully. I don’t want the same thing happening to Batman that happened to Spider-Man with their respective 3rd installments.