A recent interview with a extra from TDKR might possibly reveal how similar the movie is to the comic storyline "Knightfall".
Know Your Marvel News: So you are an extra in The Dark Knight Rises?
"TheDredog21": I'm a Extra in the movie when we start shooting in Pittsburgh next month.
KYMN: You say next month, is there anything you have already filmed, anything new that we saw in the teaser?
"TheDredog21": [in the trailer] The Epic Conclusion is referring to the fight scene between Bane and Batman. Batman does get bloodied and beating to a pulp finally bane has Batman over his head in the air .....well you just have to find out what happens but the first offical trailer you will see has young Ra's al ghul and Catwoman. But it is Bane and batman at the end of the trailer Batman is limping and Bane is limping as well, Batman walks up to Bane before they fight and Bane says I've been waiting for you pumps his Venom up then turns his head then Batman backs up.
KYMN: Some very interesting details, so what else will you be shooting?
"TheDredog21": I'm Just a Extra During Banes Prison Break but I hope to do more films since im talented in doing voices and i would play a real dark bad guy or any voice of a villian if i had a chance to.
So it sounds as though that Bane will figure out Batman's identity and break his back like in the original comics,
but there is no confirmation that this is true.
We won't know the truth for almost a year when
The Dark Knight Rises releases on July 20, 2012. Starring Christian Bale as Bruce Wayne/Batman, Michael Caine as Alfred Pennyworth, Gary Oldman as James Gordon, Tom Hardy as Bane,Anne Hathaway as Selina Kyle