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 music of "Anthology" is also being revisited with the Nov. 21 release of "The Beatles Anthology" music collection. The original "Anthology" albums consisted of three double albums, all of which have now been remastered by Martin.