WotC's website the covers for D&D Next have been revealed. As XStarkillerX notes at The Piazza, the announcement also includes release dates for the three core books, the starter set and new adventures. It is surprising that so little bravado accompanies this announcement. Perhaps they are assuming that bloggers and forum posters will do the job for them? :D
Although the images are fairly small, I dont see any mention of "5th Edition" or "Next" on the covers. The new style should ensure that these books are not confused with previous edition products however.
ENWorld also reveals this logo:
And this one:
What do you think of the art?