Back in November, Jillionaire let it be known that Major Lazer was working on new material that would be done by the end of 2013. At the time, he mentioned that it'd be a new album, but Diplo recently sent out the following tweet:
Exciting news for fans of the crew. With reggae and dancehall vocalists like Sean Paul, Elephant Man, RDX (could that be the Moska-featured "Lose Themselves?"), and Machel Montano on the case, this should be an awesome release. He also mentioned Pharrell, although that could mean either a track that Skateboard P just vocals, or something that maybe he had production on (it looks like Pharrell is getting around; Mr. Carmack recently spoke on working with Pharrell). We're officially excited for this, whatever comes about.
EDIT Diplo is also apparently working on material with deadmau5?