http://blog.us.playstation.com/2011/09/05/playstation-plus-september-offers-10-free-games-including-plants-vs-zombies/
PlayStation Plus content list for September 2011 (Please keep in mind these are expected release dates. Some content outlined may be subject to change)
Free PSN Games and DLC:
Plants vs. Zombies - 9/6
Astro Tripper - 9/6
Altered Beast - 9/6
Free Minis:
Bashi Blocks - 9/6
Jellypops - 9/13
Street Smarts - 9/27
Free PS one Classics:
Jet Moto - 9/6
Resident Evil Director's Cut - 9/20 (2 weeks)
Resident Evil 2 - 9/20 (2 weeks)
Resident 3 - 9/20 (2 weeks)
Full Game Trials:
BulletStorm - 9/13
Saint's Row 2 - 9/20
Bolt - 9/20
Tiger Woods PGA Tour 12 - 9/27
Discounts & Sale Offers:
Alpha Mission - Minis - 20% off - 9/6
T.N.K. Iii - Minis - 20% off - 9/6
The Impossible Game - 25% off - 9/6
Vanguard Ii - Minis - 20% off - 9/6
MotorStorm Apocalypse Premiere Pack Bundle - 30% off - 9/13
Cubixx HD - 30% off - 9/20 (1 Week)
Resident Evil 4 - 50% off - 9/20 (2 Weeks)
Resident Evil Code Veronica X HD - 50% off - 9/20 (2 Weeks)
Armageddon Riders - 40% off - 9/6 (2 Weeks)
Lucasarts PSP PSN Sale - 50% off PSN Sale Price - 9/13 (1 Week)
-Star Wars The Clone Wars: Republic Heroes PSP
-Star Wars: Battlefront II
-Star Wars: Battlefront Renegade Squadron
-Star Wars: The Force Unleashed PSP
-Star Wars: The Force Unleashed Apprentice Mission Pack
-Star Wars: The Force Unleashed Character Pack 1
-Star Wars: The Force Unleashed Character Pack 2
-Star Wars: The Force Unleashed Hoth Mission
-Star Wars: The Force Unleashed Tatooine Mission Pack
Free Themes:
Plus Exclusive Clouds Dynamic Theme - 9/6
Cow Abduction Dynamic Theme - 9/20
Armageddon Rider Dynamic Theme - 9/27 ( 1 Week)
Free Avatars (One Week Only)
Armageddon Rider - Armageddon Rider Avatar - 9/6
Armageddon Rider -Collider Zombie Avatar - 9/6
Armageddon Rider - Fast and Deadly Avatar- 9/6
Armageddon Rider - Hot Rod Avatar - 9/13
Armageddon Rider -Logo 1 Avatar - 9/13
Armageddon Rider - Logo 2 Avatar - 9/20
Armageddon Rider - Zombiemower Avatar - 9/20
Media:
Qore Episode 40, September 2011 - 9/6 - Early Access