Here's something I just thought of.
Reading this, it says that they had to restore the original films completely before making any alterations. (Why they didn't make a video transfer from that restored negative and make that the "One Last Time" vhs/laserdisc set I do not know)
To make the alterations they scanned that restored negative at 2k and added computer effects, then basically printed that to film and either spliced the modified scenes into the original negative or just made a new print. From there they made the 1997 theatrical prints and video versions.
Now, at the time a 2k scan for something that was going to have added CGI was pretty good. However, by the time Disney gains control of the films, there will probably be demand to make a new transfer for a theatrical re-release of the OT. (like how Episode 1 got a new transfer because it had a 3-D re-release) The existing Blu-ray is sourced from a 2004 1080p scan. That looks pretty good on video but it certainly won't cut it for the big screen or IMAX, especially with improved video technology in 5 years.
So if Disney wants to get a 4k scan to use to show any version, they will have to go back to the original negative. But they can't use the SE parts, that will only get them 2k. So they would have to rescan the unaltered negatives at 4k, then if they wanted to either upscale or redo the CGI over the existing scenes.
Because hard drive space is no longer such a premium like it was in 1997, it would be very easy to save a digital 4k copy of the unaltered parts and the new SE version. And digital editing makes it a snap to assemble either version in high quality simultaneously without splicing film any further.
With a high quality copy of the originals acquired anyways through the process of making a new master, Disney will probably figure "well a lot of people are interested in this version. Since we have it available, we might as well sell it."
There's no reason to believe if Disney obtains a high quality version of the OOT, they won't make it available. What I'm not sure is that if Disney will want to restore the OOT if it require extra effort on their part beyond what they will do to present the films in 3-D. But if they're going to get the unaltered version restored along the way, then why not. But it's not like they're going to be in any rush, this is the company that only makes their most desired animated films available for a limited time so they can keep people interested in them. So they probably figure that by 2020, the unaltered dvd's will be even harder to find and more sought after so that the demand will be greater if they wait until then anyways.
So what do you guys think? Am I right? Did I get the specs correct from the article. Does this make sense?