Only news that's official is:
* Release date: July 20th, 2012
* Christian Bale, Michael Caine, Gary Oldman, Morgan Freeman and Tom Hary are the only confirmed cast members.
* Jonathon Nolan and Christopher Nolan wrote the screenplay, and David S. Goyer and Chris Nolan came up with the story and plotline.
* Hans Zimmer and James Newton Howard are doing the score.
* Wally Pfister is the cinematographer
* It won't be in 3D (unless Warner Bros. change their minds)
* Nolan's pushing for it to be shot entirely in IMAX
* The Joker is NOT coming back
* Neither is Harvey Dent/Two Face
* The Riddler will not be used
* Mr. Freeze has been ruled out, which goes without saying (Although i can see him as a serial killer who puts his victims in a CO2 freezer..... naahhhh)
* Robin won't be in it - Christian Bale even said he won't do the film if Robin is written into the script
* Nolan and Goyer have stated they want to use a more unknown villain from the comics (one not used in previous films)
* Tom Hardy stated that his role is a large role in the film
* The film begins shooting in April 2011
* The film's title is: 'The Dark Knight Rises'
There's also talk about the studios looking for a female lead in the film - they never said what role, but obviously to balance out the gender capacity of the film, there's bound to be a leading lady position, though I doubt it'll be Catwoman or Harley Quinn.
And also, Nolan wants to raise the bar on capturing the new film:
The commitment to IMAX and high-definition cameras will allow Nolan to avoid the dim-image challenges that come with 3D. He said it will let him take the third film in the series into a new strata as far as image quality and the scale that can be achieved with that quality. ”We’re looking to do something technologically that’s never been done before,” Nolan said. “Our ambitions are to make a great movie."