According to the people behind the Steam Apps Database, both ShootMania: Storm and TrackMania 2: Stadium are set to be released on Steam. TrackMania seems to be your standard racing game fare based on the official trailer and thus something that I'll avoid, but ShootMania looks to be a fresh, fast paced multiplayer shooter based around having entirely custom, player built maps as an encouraged aspect of the game, which could be interesting.

There's no official word on the expected Steam release date of either game, but since both games have previously only been available on the ManiaPlanet website, the move to Steam - whenever it occurs - may help bring some new blood to the communities surrounding each series.