Although no one seems quite sure what he's doing beyond 'working on the tabletop side of D&D again,' so it's not impossible that he's working on the early development of 6th Edition.
I am praying that this is true but not perhaps for the same reason that others might.
As they are working to sanitize the game, I am ready to make a clean break. A new edition would clearly demarcate my line of no more purchases. Additionally, I believe this will be their new (4th edition "moment") where they alienate the actual buyers. At that point they might finally "get woke" to what paying fans want.
My friend believes the pendulum will swing back.
For my part, I have been reading various forums and see people who are pushing to make orcs and drow "slightly misunderstood" are also the same people that talk about pirating or sharing codes for online services. Their numbers do not equate to implied purchasing power as I hope WOTC will find out.
Sorry for the tangent.