I saw it just this afternoon (in 3d - no comment about that, it was either see that or I wait longer to see 2d. My eyes still hurt). And...yeah, I was impressed. I liked it more than I thought I would. I'm speaking as someone who's only casually been into Star Trek from time to time - I don't actively look to watch or read anything in the series, though I will watch episodes if someone else is - and it's definitely good for an action flick. A lot more interesting to me than the first movie ever was.
(The fact that I barely even remember what happened in the first movie even though I did watch it? Yeah...)
Although there were some plot points they used that did make me question things, which, for the sake of not spoiling stuff, I won't get into. But yeah. Overall, pretty good movie.