The official Xbox site listed the game with an April 18 release date before quickly retracting it. Not before Eurogamer managed to snap a pick though (above) clearly showing the release date.
EGM’s TAKE: Considering that the date falls on a Wednesday, which is the typical Xbox Live update day, and the date was retracted shortly after going up, it stands a good chance that it is correct. Evolution is the highly anticipated sequel to Trials HD and will feature actual direct multiplayer as opposed to just time trails and leaderboards.
Picture sourced from Eurogamer, link below.