The Dark Knight Returns

Some key information about the upcoming sequel to Batman Begins has been officially announced:

• The film will be called The Dark Knight, which, as everyone knows, is a common nickname for the Batdude.
• Christopher Nolan will direct the film, using "a script by Jonathan Nolan, based on a story by...Nolan and David Goyer, who both wrote the screenplay for the previous film."
• The principal villain will be the Joker, and he will be portrayed by Heath Ledger. (There's no word on whether Dr. Harleen Quinzel will appear alongside her puddin', Mistah J.)
  
• Production is set to begin in early 2007, so I suspect the film will hit theaters in the summer of 2008.