We saw a pretty strong hint of it back in March, but now developer Polytron has confirmed it: their perspective-shifting puzzle-platforming game Fez will be released over Xbox Live Arcade in "early 2010," according to a post on their website.
Although it was made with Microsoft's XNA development framework, Polytron has until now remained quiet on what platforms Fez would be released. The announcement post only mentions Xbox Live Arcade, but it's unclear whether this rules out a PC release as well.

For those unfamiliar, Fez is an independently developed game that combines the 2D/3D switching of Super Paper Mario with the perspective puzzle-solving of Crush and Echochrome. You can check out the video above to get a better idea of how this intriguing game plays.