New Info about the film, and it's Villan.
From Wikipedia.
Nolan plans to have the script finished in January 2011. Filming will start the following May and conclude in November.[89] Nolan's commitment to IMAX and high-definition cameras will enable him to avoid the dim-image challenges that come with 3-D film, which he believed would distract audiences from the storyline. "We’re looking to do something technologically that’s never been done before," Nolan said. "Our ambitions are to make a great movie."[90] Nolan has had several meetings with IMAX Vice-President David Keighley to work on the logistics of projecting films in digital IMAX venues.[91] The Dark Knight Rises will feature more scenes shot in IMAX than The Dark Knight.[91] Because of the considerable noise made by IMAX cameras, 70mm cameras may be used for shooting the film's dialogue scenes.On January 13th 2011 the villain was announced to be Talia Al Gul.[91] The film will be released on July 20, 2012.