Even if we don't hear anything by the end of Celebration, the fact that Battlefront isn't streeting until November gives me some hope. Star Wars dvd releases lined up with videogame dates (The OT and Battlefront, RotS and Battlefront II, the GOUT and Lego Star Wars II, etc). If Battlefront was releasing in September, we'd be hearing right now if a new blu-Ray was on the way. We didn't hear about the GOUT until only four months before its street date. November is still a long way off.
If they are indeed planning an OOT blu-Ray, they may very well be waiting until Comic Con in July to announce a November release day and date with the new game.
As has been said, it would be weird to announce a new blu-Ray only a week after the digital release, even if they're targeting two very different audiences. It just wouldn't make sense business-wise, and they've been advertising the digital version constantly during the livestream.