Here's a link to it: http://www.youtube.com/user/machinima#p/c/6656FE6D5A4D6973/0/bSX2oxLdcWA I gotta say it looks better than the last one.
apparently only 3 actors from the first one are back for this one. From what I'd heard and read, they basically gutted the franchise and re-built it from the ground up. But this is still a sequel to the first movie.
There is already a lengthly discussion thread on the film, updated with the trailer here. http://www.trekbbs.com/showthread.php?t=137804