Just did my weekly update for release dates, so you might wanna check out the games planned for september.
Just like every year, a lot of games are planned for september (57 pc titles planned for this month), so here are some highlights (and no, Half-Life 2 isn't listed for september):

09/03

Battlefield 1942: Secret Weapons of WWII © Electronic Arts

09/09

Anarchy Online Shadowlands © Funcom
Savage © Tri Synergy

09/16

Freedom Fighters © Electronic Arts
Homeworld 2 © Vivendi
Jedi Knight: Jedi Academy © Lucasarts
Massive Assault © Matrix Games

09/22

Command & Conquer Generals: Zero Hour © Electronic Arts
Medal of Honor Allied Assault Breakthrough © Electronic Arts
NHL 2004 © Electronic Arts
Sim City 4 Rush Hour © Electronic Arts
Tiger Woods PGA Tour 2004 © Electronic Arts
UFO: Aftermath © Cenega

09/23

Chrome © Strategy First
Commandos 3 © Eidos
Greyhawk: The Temple of Elemental Evil © Atari
Lock On: Modern Air Combat © Ubi Soft
Rainbow Six: Athena Sword © Ubi Soft

09/30

Age of Mythology: The Titans © Microsoft
American Conquest: Fight Back © CDV
Counter-Strike: Condition Zero © Vivendi
Halo © Microsoft
Robin Hood: Defender of the Crown © Capcom


As you can see, EA has a lot of titles, and it's only the beginning


Full list here