Majoru Oakheart
Adventurer
No wild guessing at all. Mike Mearls and Jeremy Crawford both said that in separate interviews at Gen Con this year.
I hadn't heard that they had said that. Interesting. Though it's kind of telling that all the D&D seminars at GenCon I've ever seen were scheduled in 50 person rooms.
Though, I have to agree with what DEFCON 1 says up above. People have better things to do than attend panels on "The Future of the Realms" at GenCon. They have games to get to.