http://www.nintendo.co.jp/wii/sb4j/index.html
The link will take you straight to the Japanese website for the game. Some great new gameplay videos and the usual stuff, like the Yoshi bit and info about 2-player co-op. Seems the 2nd player has a greater involvement this time, being able to control the baby Luma 'Chico' to help Mario.
No desktop wallpapers yet. Hope they'll be available, the art for this game is too beautiful to pass off. And there's two hidden sections in the site too.
