News on the rumor, from Screamscape:
I think he's definitely right about one thing --- this won't be confirmed by Disney until it's able to be built into the hype of the sequel's release. Especially since they can work on this out of the public view in the soundstage without anyone being the wiser.
But just as a reminder, to fuel this speculation --- they mysteriously didn't use this "empty" soundstage at Star Wars Weekends for the merch store this past June, opting instead to cram it into the tiny AFI gift shop......