We've seen blue and we've seen red, but what the hell does black mean? This doesn't look like an official logo to me, but multiple retailers are using this boxart. I'm wondering if we'll see the logo replaced with an official Nintendo one before launch. Thanks to Jassim for the heads up!
UPDATE - Some people are saying that the logo is black/unofficial because it doesn't use Nintendo's official servers for the game. Seems like a great explanation to me!