Certainly this won’t generate any sort of controversy. In an interview with Cinemablend to promote Strange Magic, Nick Rimando asked the Maker himself what details he could reveal about The Force Awakens. The answer, unsurprisingly, was nothing. As for why Lucas couldn’t say anything, well:
The ones that I sold to Disney, they came up to the decision that they didn’t really want to do those. So they made up their own. So it’s not the ones that I originally wrote [on screen in Star Wars: The Force Awakens].
There’s no doubt those two sentences are going to cause all sorts of reactions, all of which will follow the usual post-Disney sale outrage scripts from all sides. It’s important to keep in mind that story treatments often get tossed aside or are heavily modified by the time the final scripts are being put in front of cameras.
The reasoning for Disney going their own path is likely simple. It’s better to start fresh with a new braintrust in place from the beginning than to try and not fumble a handoff of someone else’s plan meant to stretch nearly a decade of development.