This is what a Wii U game box will look like
Big news day, eh? Still, it's kind of neat. Ubisoft and Nintendo have both confirmed that the following is indeed official:
So, basically, the Wii U banner sits along the top of the box art, and the game case itself will be the same blue hue as the banner (think the Xbox 360's green cases, and you're on the right track). Also, note the "Nintendo Network" logo on the box. Oooh!