Yep there is. They're working on a prequel; REC Genesis and the sequal to the 2 called REC Apocalypse.
REC Génesis will be directed by returning director Paco Plaza and take place before the first film, documenting the original infection. [The film has an expected release date of fall of 2011. REC Apocalypse will be directed by returning director Jaume Balaguero; this film will end the saga with the infection spreading to unknown proportions. The film has an expected release date of fall of 2012.] Great films. But they might just be release in Europe. Like the last two films.
Will be avaible on DVD/ BluRay in June.
[ame="https://www.youtube.com/watch?v=m0-gVB-U5is"]https://www.youtube.com/watch?v=m0-gVB-U5is[/ame]