The first [REC] 2 trailer has gone up on the interwebz, and it looks awesome. Rather than a professional news camera, all the footage is from the riot policemen's helmet cameras, and none of the scares seem to have been lost in the shift.
It looks to follow armed riot policemen who are sent into the apartment building immediately following the events of the first movie.
Spoiler for REC, don't read if you haven't seen it:
It looks like all the principle characters from the first movie are back in their super-demon-possession-rabies-infected forms, including Manu the bald fireman (who still has his hammer, it seems) and the little girl whose dog started the infection. It'll be interesting to see if wee get a look at zombie Angela or zombie Pablo (her cameraman), or if wee'll see more from Patient 0, the infected little boy, or the owner of the penthouse, who was the emaciated zombie with the claw hammer at the end of the first one, who wee only saw through night vision.
I'm actually gonna be hopefully making a short movie of my own using the same kind of ideas. It won't be anywhere near as good but hopefully I can do it :)