Hanson is in the studio now, recording their currently untitled new album. 'Album X' is the follow-up to their multi-million selling success, 'Middle of Nowhere'; their major record label debut. They have written a number of songs for the new album, and were working with producer Ric Ocasek. Ocasek was replaced by MoN co-producer Stephan Lironi who finished producing the rest of the album.
For more information on what happened with Ric Ocasek, read this Rolling Stone Article. Don't make too much of it, though, because it probably isn't the whole story.