Sounds exciting. I wonder if all this secrecy surrounding his identity will go the distance? If the writers have found the perfect way to keep that hidden until the film's release?
I can't say I believe it's Khan. Not without some bizarre transporter accident or bodyswap nonsense. Benedict's too unlikely a recasting for that an it would be so inconsistent with practically everything that made the last film a success - i.e. actors who weren't much of a stretch from those who originated the characters. Zachary Quinto being brought in as Spock, more or less sprang from fans observing his likeness as not being unlike a young Leonard Nimoy. Then there's Karl Urban nailing DeForest's McCoy... so let's just say, I find it very unlikely without some unusual [insert biotech here] reasoning.