With all the rumours out there I really wasn't surprised he was Khan.
What did surprise me was how many parts of the movie were near carbon copies of other Treks, not just Kirks fake-out death, but Bones 'performing surgery' on the torpedo, Scotty sabotaging a ship pursuing the Enterprise. There's loads more in there. Lots of things I kind of anticipated turned up some form or another, false flag operations to start a war etc,
But all those nods and winks to things that happened before are lost on movie goers, and just annoy the hell out of me. Where's the new stories a rebooted universe could give us.
You may find that having is not so pleasing a thing as wanting. This is not logical, but it is often true." Spock (Amok Time)