I am tentatively excited about this.  I am a big fan of the previous games, but Wii motion controls tend to be less precise than DS controls (which were already less precise than the original GBA button controls).  But I'm sure it will be a fun game, and it will be interesting to see what the team comes up with -- they've had several years to perfect their efforts since WarioWare Smooth Moves.

I played the demo of the DS game, it was interesting enough that I'd check one out if it came to Wii. How well did Rhythm Heaven sell in North America? I ask because I think that could be a good indicator of whether this one will be released here.

I assume there's no word on if this game will use the Motion Plus.