I have to admit that, though I am optimistic for this movie, most of what we've heard has largely been hot air and lip service. That doesn't mean the movie will be bad, but it does mean we have little clue as to what's actually going to come out in May.
NEM had an uber-fanboy, Hollywood darling writing it, and the producers were saying it would be the biggest, bestest Trek movie evAr. We know how well that turned out. A lot of people (myself included) consider it the worst Trek film of all time, and it bombed badly. So there are no guarantees.
I'm giving Abrams a chance to show us what he's done before I start bitching though.