Disney, who hold the distribution rights, have moved The Beatles: Get Back’s release date to August 27, 2021.
The delay is due to the on-going coronavirus pandemic and the studio want a cinematic release for the highly-anticipated documentary.
The Beatles: Get Back follows on from 1970 Let It Be documentary, which included footage from the January 1969 recording sessions of the album of the same name.
Jackson’s film is set to recut Michael Lindsay-Hogg’s film in a more positive light, challenging the common belief of ill-feelings among the Fab Four at the time.
For The Beatles: Get Back, Jackson has had access to over 55 hours of unseen footage and 140 hours of audio.
What is used will be restored, including the full 42-minute rooftop concert, which was The Beatles final live performance.
Jackson and his team previously restored and colourised unseen First World War footage for 2018 documentary film They Shall Not Grow Old.
The Beatles: Get Back has been supported by both surviving members of the Fab Four, Sir Paul McCartney and Sir Ringo Starr.
While John Lennon and George Harrison’s widows Yoko Ono and Olivia Harrison have also backed the project.
McCartney said: “I am really happy that Peter has delved into our archives to make a film that shows the truth about The Beatles recording together.
“The friendship and love between us comes over and reminds me of what a crazily beautiful time we had.”
While Starr enthused: “I’m really looking forward to this film.”
The drummer added: “Peter is great and it was so cool looking at all this footage.
“There was hours and hours of us just laughing and playing music, not at all like the version that came out.
“There was a lot of joy and I think Peter will show that.
“I think this version will be a lot more peace and loving, like we really were.”
On the project, outgoing Disney boss Bob Iger said: “No band has had the kind of impact on the world that The Beatles have had, and The Beatles: Get Back is a front-row seat to the inner workings of these genius creators at a seminal moment in music history, with spectacularly restored footage that looks like it was shot yesterday.
“I’m a huge fan myself, so I could not be happier that Disney is able to share Peter Jackson’s stunning documentary with global audiences in September.”
While Jackson added: “Working on this project has been a joyous discovery. I’ve been privileged to be a fly on the wall while the greatest band of all time works, plays and creates masterpieces.
“I’m thrilled that Disney have stepped up as our distributor. There’s no one better to have our movie seen by the greatest number of people.”