Someone on the Nolan Fans forums posted a very interesting description of a possible scene for The Dark Knight Rises, further describing Bane's possible origins and role in the film.
Over at the Nolan Fans forums, the creator of the thread below posted a possible scene description a while back of one of the scenes films in India in May for The Dark Knight Rises. While we've heard things about Bane jumping out of the Lazarus Pit, surviving a burning village, etc. in the past, the following goes into much more details. So although this is still classifiable as a rumor until further notice, a strong spoiler warning is being placed, so turn away if you wanna know nothing about the film already.