The latest news to come out of E3 on the Wii U is its lack of support to play Gamecube games. The Wii U is only backwards compatible with Wii and its accessories such as the Wii remote, nunchuk, and Wii Balance Board. So if you were planning on ever finishing Super Mario Sunshine or Eternal Darkness, you better get to work as you won't be able to experience them on the Wii U.
Seeing as how the Virtual Console is host of many classic games on a variety of Nintendo and non-Nintendo systems, I could see Gamecube games making their debut once the Wii U is released. If Microsoft and Sony can release games from past and current consoles their their respective online marketplaces, then Nintendo could easily deliver Gamecube games too.
[Via Giant Bomb ]