Bungie's newest game may be coming to the Wii U.
http://www.nintendoworldreport.com/rumor/33375
Destiny, the newest game by Bungie, may be coming to the Wii U.
When looking through the official pre-order page, Gamnesia found Wii U listed in the code for the page among other not yet announced platforms.
It is also possible that all platforms may have been listed by Activision by default, a publisher that supports major platforms. So far Destiny is only confirmed for the PlayStation 3 and Xbox 360.
I think this was debunked on NeoGaf as to not be an indication of the game coming but just something that was in the site code as suggested. The site is down at the moment but when it's up I'll link to the thread.
Edit: Here it is.
http://www.neogaf.com/forum/showthread.php?t=514165&page=2 (http://www.neogaf.com/forum/showthread.php?t=514165&page=2)