I can't confirm or deny this, short of an image hosted on somebody's Comcast server
, but here's some details:
Perfect Dark Zero (Map Pack #1 - 4 maps, and 3 game variants): May/June, 500 points.
PGR3 (3 Cadillacs, Gamer Pic): June, free.
Street Fighter 2: HFE (Live Arcade): June, 400 points.
Perfect Dark Zero (Map Pack #2 - large maps): July, 500 points.
PGR3 (5 cars, Cat and Mouse gaming mode, Proximity Based Racing mode): July, 500 points.
GR:AW (new maps and co-op scenarios): July, TBA points.
Kameo (Hardcore Package - harder game, new skins, new co-op game): July, 500 points.
Cloning Clyde (Live Arcade): July, 800 points.
Call of Duty 2 (5 Multiplayer Maps): July, 900 points.
Frogger (Live Arcade): August/September, 400 points.
Lumines Live (Live Arcade): August/September, 1200 points.
Roboblitz (Live Arcade): August/Sept, 800 points.
Pac-Man (Live Arcade): August/Sept, 400 points.