Here’s a change that ZaneFlare92 spotted and brought up in the 4K77 thread. I don’t think it was a deliberate change, but it is a change to the original theatrical version…
It looks like all versions of the film prior to the creation of the new Interpositive in 1985 had an artificially extended bright scene as Luke makes his foolhardy first attack pass on the Death Star:
All 3 film scans agree, Luke is supposed to stay bright - Video clip:
What this probably means is that the effect was produced as part of the color correction process - they artificially turned up the brightness to achieve this look (as opposed to using on set lighting to produce an in camera effect). This would mean that the extended bright version is not on the negative. The last interpositive created for home video releases was made in 1985, and that would have been created directly from the negative - so the extended brightness wasn’t there and I guess nobody thought to re-add it, so none of the home video releases from that point on have it. However, I just looked at the 1982 CED release, the 1983 HBO broadcast and the 1982 rental tape and they all have the extended brightness, which makes sense as they were probably created from the same color timed interpositive as the release prints.
This frame is from the CED version: