Benjamin Olson
Hero
I think it's a short term marketing term used to emphasize compatability during the transition. I don't think it will be the name long term.
For the few years it will last.As the dissenting voice I will say, I like the clear "no more editions, just tools" message they are going for.
Nah it's going to get called 6E because once people start googling it, stuff like "AED&D" or "5EAE" or the like will be clumsy and not work. 6E is a lock unless WotC finds something competitive with that.They should call it D&D Next! Oh wait, that was just a playtest name, like this will end up being.
Everyone will just end up calling the Anniversary Edition D&D, to distinguish it from Vanilla 5E D&D, since it is supposed to be fully backward compatible and still be 5E.
(But while I don't care for "One D&D", I would be totally down for a "D&D Uno" themed card game.)