I guess we all know it should be released in August. If it's right, that will mean buying a "current" games console for the first time since my Atari 2600
It's funny how Samba De Amigo is the game that's finally selling you on the Wii, because I always thought that the technology the game employed way back when has been improved upon in so many other games (e.g. Wii Sports) that have helped sell-out Wiis from the get-go.
But conversely, I do have fond memories of that game and it's great that it's no longer a $200 investment (not including the Wii console, of course) for a full, two-player experience. And Wii Sports doesn't have Ricky Martin tunes!

Personally, I don't want any add-on maracas. I already have a closet full of Wii remote add-ons (wheel, nunchuks, classic controllers, Guitars, balance board, etc.)