Nadeo and Ubisoft have pushed out some more details on TrackMania 2 Canyon. Namely, the closed beta for the sequel is going to start in July, with ManiaPlanet -- a connected system for PC which contains tools that allow for user-made "game creation and participation" -- also gearing up around then.
So, what exactly is ManiaPlanet? Think along the lines of features you saw in TrackMania -- a map editor, an explorer for created content, ranking, and matchmaking. TrackMania 2 Canyon will be the first title to release on this system, followed by its shooter and RPG counterparts ShootMania and QuestMania, respectively.