I think it will lead into to plenty of story lines, but I don't think it will lead into original TOS.
Nor do I think it should. I am not a canon-ist. I like trek for what it is, space battles and exploration. Yes some kind of overal theme running through it to bind it together is good. but when then binding becomes so tight it shackles it, it is bad.
This film looks like to be what trek needs to break free f it shackles, lose its geeky/nerdy image and continue boldly going.