Recently on G4's Attack of the Show. Producer J.J. Abrams gave some info about the possibilities of a Cloverfield sequel. Abrams said

“There is a couple ideas that Drew Goddard , the writer, and Matt Reeves have that are pretty fantastic. So we’re playing around with some ideas and obviously if it isn’t something that really excited us and inspires us, we won’t do it. But there are some good ideas out there.”

Abrams also confirmed for the speculating public that Cloverfield has nothing to do with the television show LOST. The full video interview is below: