At Nintendo's E3 08 Developers Conference this evening, Nintendo's Shigeru Miyamoto confirmed that Nintendo is working on a version of Pikmin, we take it for either the DS or the Wii.
Miyamoto, discussing Nintendo's relationship with "core" gamers said, "[Core] games could apply to games with better graphis or a more involved story, so if we forget those elements too, that would detract from our work, so we continue to investigate all types of games. When it's time to announce such a title, I'll announce it. We're making Pikmin."
We'll let you know more when we know more.