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.

Speculation over what major Beatles product Apple Corps would issue as the group’s big annual fall release can now end: It’s a reissue of all of the components of “Anthology,” the band’s multimedia retrospective project of the late ’90s,