It's not confirmed, but it looks increasingly like a Wii version of Kid Icarus is in the cards. The source:
Matt Casamassina, on episode 7 of the IGN Nintendo Voice Chat podcast Casamassina said, "Of course [Nintendo is] going to have some E3 surprises. You know, Kid Icarus, for crying out loud, how many times do we have to say Kid Icarus? Kid Icarus is coming for crying out loud." When a co-host asks if he wants to reveal the developer he responds "I think we've confirmed it a billion times but no, I'm not going to say it officially."
There you go: Not official, but we'll bet you a Wii version of Kid Ic is revealed at E3 this year.