This game could be Killzone 2s twin.
so here the Brink - 360 footage (the game is in alpha-stage)
http://g4tv.com/videos/43027/Exclusive-Brink-Preview-Objective-Perspective-Part-2/
looks a lot like Killzone 2 + colours + Mirrors Edge acrobatic moves + cartoony characters.
This game is multiplatform by the way.