freebs2 on 28 November 2012
This picture was from Miiverse E3 presentation, you can see the Yoshi icon on the right, so it could be true. There's also a Metroid icon (which is pretty much confirmed in development, the same goes for Zelda), a Mario Kart game is a given and the star icon could easily stand for a Mario Party game. I remember there was also a rumor about Lugi's Masion coming to WiiU and there you have a Boo icon.
Maybe these icons are all coming from games in development, or maybe every rumor is just speculation based on this picture :P
