The Witcher 3 Announced, First Artwork Revealed [Update: More Artwork, Video]Some preliminary info supposedly contained in the article:
World supposedly 20% bigger than Skyrim's
30-40 minutes to cross world on Horseback
New streaming technology (CDRED Engine 3)
Geralt's Memory is restored
Everything from solving MYSTERIES to slaying monsters
Coming out on "all top-of-the-line" consoles - I'd say that confirms next-gen is in.