Abrams has a gift for leaving viewers wanting more. I think that he will bring this to the trek universe with this film. Lets remember that this is not something that he does by flying on the seat of his pants but by intent and skill.
Add to that the fact he has signed on for three movies i would dare say that the script on this will bear that in mind and they know things that will run across all three movies.
So i expect the story in each to have it's own resolution yet leave me with a sense that i cannot wait to get my butt back in the seat for the next installment.
Interestingly as Berman was to the trek universe what clooney was to batman i do think that abrams will do for trek what nolan did for batman.
Sorry for being too lazy to use caps but it's after midnight.