During a developer roundtable discussion at E3 today, Nintendo said that it's currently working to figure out how Wii owners will be able to transfer their content to the Wii U. The fact that this is even a possibility is pretty amazing to us.
"We are readying the system, yes, to transfer saves and everything you've bought," designer Katsuya Eguchi. So it looks like the idea of transferring WiiWare, Virtual Console and save data content from the Wii to the Wii U is not the crazy pipe dream we once thought.
[Note: Image taken from today's Nintendo liveblog