NeverarGreat said:

I am sure that this is a different scan than the Blu-ray, because if you look at my comparisons the new version has a different warping pattern than the Blu-ray:

http://screenshotcomparison.com/comparison/83700/picture:1

My conclusions:

This is a new 4K scan of the original negatives and elements, with an improved dirt and scratches detection and elimination algorithm (they boast on their website that manual cleanup is not done on the films they process). It has new colortiming, similar but not always identical to the '97 version of the film (see the running stormtroopers and the green C-3PO). There is no evidence for or against '97 SE changes, but as this is not a simple scan of the '97 interpositive, such changes seem unlikely to be included. The evidence leans in favor of an OUT release which has yet to be announced by Disney.

Sounds like a possible scenario, and very much a Disney like approach - release the classic original films but with new digital compositing.

It should be noted that the before and after sample with the droids in the desert seems to be the old 2004 Lowry fiasco. It's old.

But the short segments in the other demo reel looks fantastic in terms of color and appears to be from a different transfer, still the ugly digital lightsaber compositing introduced in 2004 is present.