Christopher Nolan fixed Bane's voice

One of the biggest criticisms of the "Dark Knight Rises Prologue" was that we couldn't understand what Tom Hardy was saying when portraying Bane, I personally didn't really have a problem with it. Christopher Nolan originally said he wasn't going to re-record the dialogue but he did admit he was willing to "altering the sounds slightly". It seems that some theatres have received an updated audio file to play with the clip. According to Collider.

"A friend of mine who is an IMAX projectionist told me they received a new soundtrack for the Dark Knight Rises prologue. He said it’s now a combo soundtrack with Mission: Impossible – Ghost Protocol, but the cool thing about this is that they’ve cleaned up the dialogue. They’ve gone in and lowered the background noise of the plane and other things, thus making Bane’s dialogue clearer and more understandable. He asked some people after they left the movie if they could understand Bane and they all said they had no issue understanding him, and were excited for the movie."