JP April 10, 2008
EU April 11, 2008 - me :D
AUS April 24, 2008
NA April 27, 2008
Nintendo's UK site confirms that the European release of game will feature online text chat between players.[12] It will also feature an online spectator option which allows you to view your friends races and join in at the start of the next course.[12] There will also be special worldwide online events organized by Nintendo.[8]
Online events?!?!?!