Christopher Nolan had already announced He will direct and that the next Batman film will be his last, concluding a planned trilogy. But he won't be saying goodbye to superheroes. He's also at work on a new film version of Superman, though as a producer, not a director. He is developing a story he wrote with his "Batman Begins" co-writer, David S. Goyer. Nolan is reportedly meeting with potential directors for the project that would re-invent the Man of Steel in much the same way as he did for the Caped Crusader. Darren Aronofsky ("Black Swan"), Matt Reeves ("Let Me In"), Tony Scott ("Unstoppable"), and Zack Snyder ("Watchmen") are all rumored to be considered for the job.
Expect to hear more news about Nolan's third and final Batman film in the next few months.
Currently, the untitled film is scheduled for release in the summer of 2012.