I can't believe people are judging a future (a year off still?!) bluray release on some screen caps from a documentary! There's every chance they - the makers of the documentary - grabbed what was available AT THE TIME when making it. Wouldn't surprise me if Lucasfilm are going through the films in order, or at least prequals first as they'd need less work than the originals in terms of bringing them to bluray. They're probably working on the originals now which is why they had to use the current transfers in that documentary.

It's not over till it's over, and a lot can happen in a year.......!

To pronounce you know what the new bluray transfers will look like from watching a documentary is pretty far-fetched IMHO and more than a little reactionary!