A listing for the game appeared on Xbox.com today (March 1), briefly showing a release date of April 18, 2012.
The Xbox.com listing was quickly changed to December in the year 2799 to hide the date, but Eurogamer captured an image of the page with its original date intact.
Trials Evolution is the sequel to 2009's Trials HD, featuring bigger jumps, curving tracks and enhanced multiplayer features.
It will also have a robust level editor, enabling users to create and share everything from custom tracks to whole new genres such as top-down racing and first-person shooting levels.
It will be available on Xbox Live Arcade, with developer Red Lynx saying that it has no plans for a retail release.
> 'Trials Evolution' preview
> 'Trials Evolution' interview - RedLynx on bettering 'Trials HD'
Watch the gameplay trailer for Trials Evolution below: