I haven't heard too much about this game recently, so I looked on Wikipedia, this is what they have regarding a release date.
Anyone know if any truth is in those dates?
When the game was officially announced, SEGA had planned it for a release in the end of 2007. At the Games Convention 2007, Nintendo had put the release date down for November 2007, while SEGA had it down for a release during Christmas. Shortly after the Games Convention neither date appeared correct, as it had just been delayed. The expected releasedate, for Europe, was set to the first quarter of 2008, and was later confirmed to be in January 2008. By October 15, 2007 Sega confirmed the North American release date as being December 18, 2007