Hell just froze over _again_.
bq. Film archivists at the Museo del Cine (Cinema Museum) in Buenos Aires have recently uncovered the lost footage from Fritz Lang's original 1927 version of Metropolis in 16mm negatives! ... Apparently a copy of the long version of the film was set to Argentina in 1928 for a theatre screening. Shortly thereafter, a local film critic came into possession of the film reels and added them to his private collection. They were later sold to Argentina's National Art Fund, and were eventually donated to the Museo del Cine, where they were eventually rediscovered by the museum's curator this past January. [from _The Digital Bits_]
Kino had plans for a Blu-ray edition of the film in 2009, but it looks like they're going to have to _significantly_ revise that.
This definitely goes into the permanent collection.
Blu-ray Disc hell freezes over movies