Caught this article over at Billboard, which should be great news for all the MJ fans.

The material includes unused tracks from studio sessions of some of Jackson's best albums, as well as more recently recorded songs made with Senegalese R&B singer and producer Akon and Black Eyed Peas frontman will.i.am.

"There are dozens and dozens of songs that did not end up on his albums," said Tommy Mottola, who from 1998 to 2003 was chairman and CEO of Sony Music, which owns the distribution rights to Jackson's music. "People will be hearing a lot of that unreleased material for the first time ever. There's just some genius and brilliance in there."

The releases, Mottola said, "could go on for years and years — even more than Elvis.