'Scream 4' Trailer(S)!: Yes, 2.

First, the one that debuted with Spike TV's Scream Awards:

http://www.youtube.com/watch?v=Lt53UlykMF8&feature=player_embedded

There is a second one floating about that seems to be closer to an actual theatrical trailer. It contains more dialogue from the film - an explanation of the new rules, Kristen Bell talking about guys with knives, and has a very amusing ending. Most of the footage of it is not that great, but when it is officially released I'll be sure to post it. This version is a lot closer to the trailers for the original series and even seems to use similar music, as well as Marco Beltrami's score.