According to Trek Movie, the trailer is one minute and fifty seconds long, putting it at around 35 seconds longer than the extended Japanese version of the announcement teaser that was released this week.
They also confirmed suspicions voiced by ComicBook.com that the hand on the other side of the glass in that Japanese teaser will likely turn out to be that of Benedict Cumberbatch's villain (although a commenter on the story also pointed out that we do see James Kirk wearing that shirt at one point in the trailer).
Here's what the folks at Trek Movie have heard so far about the trailer:
The second trailer (which Paramount is calling a "teaser trailer") was previewed this weekend at the Butt-Numb-A-Thon in Austin, Texas. The first description of the trailer was posted via a series of tweets by Devin Faraci of BadAssDigest.com.
Full STAR TREK trailer indicates hands against glass scene is actually Spock and Cumberbatch. If he’s Sybock… Well, kudos.
That said, Cumberbatch does NOT have Vulcan ears. Hands against glass scene seems to be Cumby in the brig.
Trailer opens with Pike VO, telling Kirk he has courage but no humility, and someday that will get him and his crew killed.
Oh yeah: there’s space stuff in the full TREK trailer. Space combat. Guy in a space suit zooming around.
In addition friend (and sometimes contributor to) TrekMovie Jordan Hoffman confirmed a few more details via Twitter DM:
Cumberbatch was definitely shown in some sort of brig
Chekov appears in a red tunic (instead of his regular gold tunic)
Someone wears a EVA space suit with similar design to the one used in Star Trek: The Motion Picture