Hehe, well the music on that website might be from Zimmer's score. Sure, it's generic. But I haven't heard anything that in that "heroic vein" (on a trumpet solo too) from Zimmer in a while. If that's Zimmer's theme for the film, it's actually a big step up from his Batman and Superman scores. I don't think Zimmer has started the orchestral recording sessions yet, because it's obviously a synth mock-up now. I was pretty sure it was a mockup too, but Hybrid Soldier over at FSM claims it's the real deal-- with Arturo Sandoval on trumpet and Marr on guitar.