70mm prints of "The Empire Strikes Back" differed from the 35mm version in that some editing differences, additional shots, alternate takes, and extra dialogue can be detected through a comparison of the two versions. It is understood that when the movie was considered "finished," the elements were turned over to the lab and sound facilities so the desired 70mm print order could be prepared. The filmmakers, however, elected to "un-finish" the movie and make a few, albeit subtle, changes that, considering the expense and time involved in re-striking and and/or re-sounding 70mm prints, were reflected only in the film's 35mm prints. There is a bit of irony in all of this trivia: the majority of the public and media who saw the movie in its first month of release saw the "less complete" version.

The Empire Strikes Back
The 70mm version of the film was substantially different from the 35mm version that was more widely seen.

After the Probot lands and moves left, there is an optical wipe to the overhead shot of Luke on his Tauntaun.
After Luke wanders through the snow and falls face down, there is an optical wipe to Han instead of a straight cut.
The bacta tank scene starts on a close-up of Two-One-Bee and pans right to a closeup of Luke in the tank. It then cuts to FX-7 extending its arm to the tank. There is no cut to Leia, Han and Threepio observing.
In the snow battle scene, when Luke drops into the snow after throwing a charge into the Imperial walker, the AT-ST in the background has no atmospheric depth. It looks too close and small.
In the Emperor scene, the hologram of the Emperor is already present in the first shot-it does not "tune in" gradually.
The Imperial fleet establishing shot after the magic tree scene has a different TIE fighter sound effect.
When Luke falls from Cloud City into the Millennium Falcon, the Falcon's radar dish is not added to the shot.
The telepathy between Luke and Vader during the "Hyperspace" cue has straight cuts instead of quick dissolves.
On Hoth, right after C-3PO tells R2 to "Switch off," R2 gives out a little 'blurp.'
When Luke finally collapses in the snow, he lets out a grunt as he lands on his face.
Han says "until I can get the shelter up" instead of "until I can get the shelter built."
Luke says an additional "Ben... Dagobah..." just before Han says "and I thought they smelled bad on the outside."
When C-3PO tells Luke "It's so good to see you fully functional again," Luke replies "Thanks, Threepio."
The line "Headquarters personnel report to Command Center" is repeated three times instead of two.
The line "The first transport is away!" is said in a different voice altogether.
When R2 is being loaded into Luke's X-Wing, C-3PO says the word "and" before saying "do take good care of yourself."
Han's line "Transport, this is Solo. Better take off, I can't get to you. I'll get her out on the Falcon" is followed by, "Come on!"
In the asteroid field, after C-3PO says "Oh, this is suicide." He says, "There's no where to go."
Luke says "You're lucky to get out of there" instead of "You're lucky you don't taste very good."
Yoda makes a frightened "Ehhhhh!" sound just before Luke says "Like we're being watched" and points his blaster at him.
Yoda says the word "Run!" before "Yes. A Jedi's strength flows from the force." The following lines "But beware the dark side. Anger, fear, aggression. The dark side of the force are they. Easily they flow, quick to join you in a fight" are also much louder and clearer.
In Cloud City, after C-3PO says "That sounds like an R2 unit in there. I wonder if it..." he says "Hello?" only once instead of twice.
Before C-3PO gets shot, a different voice says "Who are you?"
While C-3PO is on Chewie's back when they enter the carbon freezing chamber, the line "Now remember, Chewbacca, you have a responsibility to me, so don't do anything foolish" is louder and heard more clearly.
During the duel, when Luke knocks Vader off of the platform, Vader lets out an "ooooh!" instead of an "aaargh!"
Lando's line at the end, "Luke, we're ready for takeoff." is a different take.
In the final scene, there is no tracked music from "Yoda and the Force".

Is any of the print scenes known or does it even exist in any form anymore. Would be cool to restore this version.