A point that has been noticed about the trailer.
Bane's voice has been cleared up(thanks to WB)
Perhaps it's a little too clear. A bit too much ADR now.
It doesn't even sound like the head gear is blocking his voice.
His voice now sounds disembodied like it's far away from him
I think all of the dialogue sounded disembodied-- because it is. We're hearing it without the rest of the soundmix the actual movie will have, and it's a little weird.
It simply sounds to me like his voice is being processed and amplified through the head gear. Which seems like a perfectly reasonable thing for it to do.
And if it DOES sound a bit more disembodied, all the better. Just makes him a little more scary and intimidating that way.