By 
Two significant system updates are coming to the Wii U in the spring and summer, says Nintendo president, Satoru Iwata. Among other features, loading times on Wii U for launching software will be improved incrementally in both updates.
Additionally, the Virtual Console service will launch on Wii U after the spring update. The entire lineup of Virtual Console games will not be available at launch, but Nintendo will prepare a selection of NES and Super NES games for its launch. Other platforms such as Game Boy Advance will be released in the future as well.
You’ll be able to play these Virtual Console titles on the Wii U GamePad, as well as access Miiverse communities for Virtual Console games, since the Wii U versions are being developed separately from the original Wii versions.
Finally, if you bought these games on the Wii Virtual Console service, you’ll receive a discount on the Wii U versions.
