Well they just dropped the whole series in one go. Just watched the first 3 eps. LOTS of unseen stuff for Star Wars, not so much new stuff for ESB, but there is still quite a bit. It’s probably going to be a lot less for ROTJ because the next ep is going to feature Indy and other projects ILM were working on by the looks of it, while the first 2 were Star Wars and the third was mainly ESB. The footage they are showing for the unaltered versions looks different to what was in the trailers, less processed, but i’d need to do proper comparisons to know for sure. These are obvious rough scans from prints, and definitely not 4k scans because they do lack detail, especially when compared to 4k77, 83 etc.