The movie, which includes the music video of the titular song, will feature 15 minutes of unreleased footage in the new version.
The soundtrack for the film, which features every song on the 1971 Imagine album, has also been remixed.
The original film had a duration of 70 minutes and include surprise cameos from figures including George Harrison, notorious producer Phil Spector, and Hollywood icon Fred Astaire.
You can watch a trailer for the extended version of the film below. It’s set to return to cinemas on September 18. For tickets and information, visit here.
Meanwhile, it was recently announced that cars formerly owned by Paul McCartney and John Lennon will be auctioned off in the US next month.
Yesterday also saw an unexpected blast from the past when Sean Lennon and James McCartney posed for a selfie together.
Sean posted the snap to his Instagram today (August 14), captioning the image “Peakaboo…”
Like their fathers, the pair are also musicians – with the photo showing James leaning on a guitar.