Resistance: Burning Skies? Unfortunately, it seems that Sony isn't ready to share that info quite yet. After updating its game page with scant details on the game mode – Wi-fi-based "8-player online multiplayer across six unique maps and three modes" – Sony later removed said info.
Presumably the details were meant for a coordinated marketing push ahead of the game's May 29 launch date, but, uh, well, here they are! We've reached out to Sony for more info, but don't expect to hear much until the stars align (and Sony is good and ready to say its piece).
[Thanks, Knives Chau!]