The release date for the USA (Sept 27, 2013) is the 27th anniversary of the death of Metallica member Cliff Burton.
There's one part in the song, "Master Of Puppets," When James Hetfield shouts, "Pancakes!" before Kirk Hammett comes in with his solo. The original lyric is supposedly be, "Fix me!" however, "Pancakes" was an inside joke that came from the former bassist, the late Cliff Burton. When Metallica was on tour with Anthrax in 1986, Cliff was asked by Anthrax drummer Charlie Benante, what was James shouting. Cliff casually answered, "Pancakes."
The film is dedicated to the memory of Mark Fisher in the final credits. Mark Fisher was a British architect renown for his rock stage designs.
The film's title "Through the Never" is named after the seventh track on Metallica's 1991 "black album". However, it is never performed in the film.
In a promotional tour for this film, Metallica surprised concertgoers by performing under the name "Dehaan", named after the film's star Dane Dehaan.