I honestly don't know... it seems weird that they'd grow into the original mission and not be a series really. But I'm thinking Klingons will probably play a big role. I wouldn't mind a try at some new discovery type of movie though.
As for Khan... I have a suspicion that they might be saving him for a later take on this alternate universe such as an alternate TNG/DS9 having to deal with him. It would be interesting at least. I'm just glad they didn't kill him off in one movie and left the possibility open for his return.