Since the kreo toys' "villains" are wearing those same uniforms, I'll say it's Khan's ship. We'd know for sure if we could see the Captain's chair.
The design is closer to Kelvin than Enterprise. Could be meant to be an older ship. Would the writers be able to resist an Enterprise versus Enterprise battle? Especially if Khan has the Marcus torpedo?
Clearly Kirks Enterprise damages Khan's ship crashing into SF bay. The Enterprise doesn't come out unscathed as we see her plummeting toward earth. But I'm sure Scotty saves it in the nick of time.