You won’t be seeing a restoration on Star Wars from 1977 being sold on it’s own.

I think it’s very possible that you will. Probably not as the only option, but I will be surprised (and annoyed) if they don’t release the movies as barebones single discs for the people who just want the OUT. They may not do this at first, wanting to squeeze out as much cash as possible by exclusively releasing some kind of “collector’s set” that includes one or more SE versions in addition to the OUT. But that will annoy diehards enough that after they maximize their profits they’ll eventually release the OUT by itself for the holdouts who didn’t cave and for more casual fans who just want to see the movies they 'member from their youth without spending too much. That ultimately gives them more money than they would get just from releasing one or the other, or both at the same time.

And I can tell you with confidence that one thing you are NOT going to see is any kind of official new Special Edition. Disney is deliberately playing to nostalgia with Star Wars. TFA should be all of the proof of that you need. George is the only one who ever cared about tweaking these movies and now he’s out of the picture.