Superherohype have a copy of Empire, in which Nolan explains, "It's really all about finishing Batman and Bruce Wayne's story. We left him in a very precarious place. Perhaps surprisingly for some people, our story picks up quite a bit later, eight years after 'The Dark Knight.' So he's an older Bruce Wayne; he's not in a great state. With Bane, we're looking to give Batman a challenge he hasn't had before."
WOW! 8 years later! Definitely did not see that coming!
Man...I cannot wait for this movie. It is FIGHTING Avengers pretty hard for my most anticipated movie of next year!