So, let's take bets: what do you think the chances are that WotC will eventually give up on calling it "D&D Next" and just start calling it 5e as everyone else is already doing?
None. In all likelihood it won't launch as ''Next'', but since they can't call it ''D&D 20XX Core Set'' they will just call it ''Dungeons & Dragons''. Or maybe they'll flip out completely on their obsession with the design of the punctuation and call it ''&mpersand''...
Come, visit the exotic desert beauty of the City of Zangiers!
(Just be sure to bring a sharp sword and sharper wits.)