In the relevant thread at the AVS Forum, someone brought up a good point about how Disney will inevitably want to release these movies on UHD blu-ray.

For the OT, they know that another SE, even if it's an SE with expanded color, HDR and in 4k, is not gonna be enough of a selling point. Not nearly as many people will make the jump to UHD like they did with blu-ray. Since those steelbook singles and the reissue of the complete saga set are hitting next month, I'm guessing it's gonna be a while before we see another release of the existing films.

When another release does inevitably happen, probably for the UHD debut, I simply don't see it being a big enough deal to catch people's attention unless the unaltered originals are included as well. Maybe that's when we'll see the grand "all versions" edition rolled out on both regular and 4k blu just as we saw blade runner on the hd formats and regular dvd.