Batman had a tumbler and we all know what happened to it. If he was replacing it, why isn't it black and why is Bane on top of it.
Theory. This tumbler is Bane's.
Subaruwrxfan's youtube channel has a video of Bane apparently yelling to a group of people, probably trying to insight a riot, while standing on a tumbler.
What makes me wonder is, what the point of him showing up in the Batmobile? I think he's trying to put himself in the same class as Batman.
Nonetheless, I don't believe this tumbler is Batman's. I think for a character to develop he must be ready to improve himself. Getting the tumbler again would be going backwards. I say Batsuit.