New “Anthology” music will be released on Nov. 21. A fourth album, to be released alongside remastered versions of the first three, includes 13 previously unreleased demos, session recordings and other rare recordings.

The Beatles Anthology will get a musical update as well. The original set of three double albums, remastered by Giles Martin, will be accompanied by Anthology 4, a new disc of 13 previously unreleased demos and session outtakes plus other rare recordings.

The Beatles reunite with Peter Jackson for new Anthology albums and documentaries, featuring unreleased songs and previously unseen footage.