The voice of Bane has been leaked!

So, here we go.

This was taken from today's first day of shooting at Heinz field.  Reports were that:

Bane interrupts the game at the kickoff (with a huge explosion, causing a crater where players are killed), bringing a silver, metallic round-shaped "machine" with him as well as a hostage.  He then declares (from the video):

"Gotham!  Take control!  Take control of your city! This is the instrument of your deliberation! Identify yourself to the world!"

After the speech, he kills the hostage, ensuing panic.

I do not know if they will be dubbing him over, I'm sure they will be, but there you go.  The voice of Bane (for now).

source - people that I know who were extras referred me to this video