Today, at a Nintendo Summit event held in San Francisco, Nintendo of America revealed that Super Mario Galaxy 2 (Wii) would be released in North America on May 23, 2010.nope
Additionally, details were revealed for one of Nintendo's other flagship franchises. Metroid: Other M, Nintendo's collaboration with Team NINJA (Ninja Gaiden series), said to be releasing mid-year. While no concrete release date has been set for this title, multiple sources are reporting that it should be ready to go halfway through 2010. The Summit was set up to showcase games that would be releasing within the first half of 2010, offering further support to a mid-year release for Metroid: Other M.
Nintendo had previously announced Metroid: Other M for a Summer 2010 release in Japan, but would only commit to a "2010" release for North America.
UPDATE: Nintendo has confirmed a release date for Metroid: Other M.