It seems possible that if they do it, they'd just slip an IP-sourced simple catalog transfer onto disc 2. Which is fine by me, it's much harder to screw up. And it would be on par with the Blade Runner set and most movies in general, which is mostly what we've been harping on all this time anyway. If they make a big announcement about the originals getting 4k rebuilt, it might be like announcing: "the policy of the last 17 years has been really stupid. We are now spending way, way more money than necessary to correct it!" Which is not a very Lucasfilm-y or Disney-ish thing.