Via Wikipedia:

Remaster – Frequently advertised with regard to CD and DVD releases, remastering has become a powerful buzzword in multimedia industries, and it generally implies quality enhancement of sound and/or picture to a previously existing recording (frequently designed to encourage people to buy a new version of something they already own).

Now see the LA Times:

Nearly a quarter-century after the Beatles and digital technology came together at the dawn of the CD era, the Fab Four’s entire recorded legacy is getting a major sonic overhaul that is widely considered long overdue. All of the group’s studio recordings will be reissued Sept. 9 in remastered versions and are expected to generate renewed excitement about the Beatles’ blue-chip catalog and pump millions of dollars into a beleaguered music industry.

Sigh. McCartney’s divorce must have made his wallet a little thin and uncomfortable to sit on.