doubleofive said:

So, possibilities:

A. Brand new scan of the ON, with all original optical effects recomposited. (the original plan for the SE; unlikely due to having to find every element again)
B. Scan of '97 SE, with '11 effects redone in 4k. (making a 4k version of the Blu-ray, perhaps for theatrical/3D viewing; likely due to the SE being "George's vision")
C. Scan of '97 SE, replacing the CG additions with original optical effects. (making a mostly-despecialized edition/original plan for the SE; possible because it's "good enough" for most purists)
D. Scan of '97 SE, to have a 4k version of the '97 SE. (neat for preservation of a lot of people's first theatrical experience of Star Wars; doubtful because '97 Jabba should not be seen by human eyes ever again)

What else do we have?

Scan of '97 SE and they don't bother to add the '04 and '11 changes.