I think at this point they’d be more inclined to release each trilogy separately.
Or each film separately. If they were actually inclined to do any of this, maybe they would release SW for the anniversary. It’s not like Fox’s rights are ever going to expire, so it doesn’t matter if they do it now or later. For the sequels, obviously it would be in Disney’s best interest to hold off. But by the 40th anniversary of Empire, things will obviously be looking better for them there. And then they can get people to buy or rebuy box sets, etc.