Announced Titles:

Unreal Tournament
Tom Clancy's Ghost Recon 
Phantasy Star Online 2
Sega 2k3 Sports titles 
Armada 2: Exodus 
Shayde: Monsters Vs. Humans

Here is a list of titles yet to be announced:

Swat: Global Strike Team
The Matrix
Breed
Return To Castle Wolfstein
Serious Sam 2
Medal Of Honor: Allied Assault
Mutant Chronicles: Warzone Online
Falcone: Enter The Maelstrom
Battle Engine Aquila

Be sure To check back On April 15th for some 
information about each game and around when it
might be released.