I must have somehow missed this story 15 years ago today. From Bob Dearborn's The Olde Disc Jockey's Almanac...
March 24, 2000…World Wide Video paid $1,079,500 for more than nine hours of film taken in February 1970 by Yoko Ono's ex-husband, Anthony Cox. The film contains shots of John Lennon smoking hash, blow drying Yoko's hair, composing "Mind Games," and talking about his political beliefs. The company edited the film into a two-hour documentary called "3 Days in the Life." Yoko Ono, claiming ownership of the film's copyright, sued World Wide Video in 2008 to stop distribution of the documentary. In Boston on June 30, 2009, a federal judge ruled in favor of Yoko Ono, that she is the rightful copyright holder of this rare, intimate footage of John Lennon. Ono says she intends to keep the material private.
It's hard to imagine there is something that Yoko hasn't released by this time...Here's the track John was working on in the unseen film...