Thats a nemesis, a standalone model in the now familiar (albeit whacky) shape. The Nemesis, Kaboom and Classic ranges (prestige, players, legend, pro performance etc) don't have the black between the chequers, the rest of the models do.
Thanks, I saw him using it in the T20 but didn't see the front, couldn't believe something the looks this classic on the face would have that monstrosity on the back, wouldn't have thought he'd use that in the 4 day stuff!