A number of retailers have the Square Enix-developed title listed for release during the first week of February.
http://www.nintendoworldreport.com/rumor/24575
Mario Sports Mix might be heading to North America during the first week of February if a number of retailers are correct.
GameStop has it listed for a February 1 release, which is a Tuesday, while Best Buy has it listed for a February 6. In addition, other North American retailers have it listed for the same early February window. A recent Nintendo Power cover story also labeled the game with a February 2011 release.
The game came out in Japan on November 25. It's due out in the United Kingdom on February 4, and the rest of Europe on January 28.
Mario Sports Mix, developed by Square Enix, features Mario and friends in four different sports: volleyball, hockey, dodgeball, and basketball.