I was going to brush it off and say it's just John Landis, what does he know... but then I read the following tweet.
Apparently George mentioned it when last they spoke. Somebody put Yub Nub on. Let the celebrations commence!
http://mobile.twitter.com/empiremagazine/status/645035521958281216
That he mentioned Lucas is VERY interesting, to say the least.
I personally have no doubt Disney's going to do it, it's just a question of when.