J.J. Abrams and company have picked as their new villain the only villain who managed to kill Captain Kirk. The new villain is Soran. Look at the poster which features Cumberbatch wearing a trench coat which is what Soran wore in Generations. He is a character from canon that TOS crew never really dealt with. He has definite motives for revenge and he bares a very strong resemblance to Malcolm McDowell and he even sounds like him.
Nah. That's pretty flimsy. It's possible the character isn't anyone at all that we'd know. The best way to keep people guessing is to make them think the bad guy is going to be someone well known from the original series. For all we know, it's Chuck Testa.