I’m not sure about this list as it’s not officially from the E3 expo website, or in a press release form.  It’s from a PS fan site that is updating the list as E3 draws closer, so take some of the titles ‘confirmation’ with a grain of salt.

Capcom USA Inc.
Spyborgs (Wii) - Confirmed
Neo Pets Puzzle Adventure (Wii, PC) - Confirmed

Codemasters
Dragonology (DS, Wii) - Confirmed
Wizardology (DS, Wii) - Confirmed

Crave Entertainment
Defendin’ de Penguin (DS, Wii) - Confirmed
Ford Racing Off Road (PS2, PSP, Wii) - Confirmed
King of Clubs (Wii) - Confirmed
PBR: Out of the Chute (PS2, Wii) - Confirmed
Purr Pals (Wii) - Confirmed
Solitaire & Mahjong (Wii) - Confirmed

D3Publisher of America
Bangai-O Spirits (DS) - Confirmed
Ben 10: Alien Force — The Game (DS, PS2, PSP, Wii) - Confirmed
Naruto: Clash of Ninja Revolution 2 (Wii) - Confirmed
Naruto: Path of the Ninja 2 (DS) - Confirmed
Puzzle Quest: Galactrix (DS, PC, X360) - Confirmed

Disney Interactive Studios
Disney Fairies: Tinker Bell (DS) - Confirmed
High School Musical 3: Senior Year (DS) - Confirmed
High School Musical 3: Senior Year Dance (PC, PS2, Wii, X360) - Confirmed
Spectrobes: Beyond The Portals (DS) - Confirmed
Ultimate Band (DS, Wii) - Confirmed

Eidos Interactive
Tomb Raider Underworld (PS3, Xbox360, Wii) –Confirmed
Monster Lab (Wii) –Confirmed

Electronic Arts
MySims Kingdom (Wii) – Confirmed
MySims Party (DS) - Confirmed
Crysis Warhead (PC) –Confirmed
FaceBreaker K.O. Party (Wii) –Confirmed
Madden NFL 09 All-Play (Wii) –Confirmed
Skate It (Wii) –Confirmed
Tiger Woods PGA Tour 09 All-Play (Wii) –Confirmed

Konami Digital Entertainment America
Castlevania (Wii) – Rumoured
Castlevania Order of Ecclesia (DS) – Confirmed

LucasArts
Star Wars Force Unleashed (PS3, Xbox360, Wii) - Confirmed

Rare
Viva Piñata Pocket Paradise (DS) – Confirmed

Midway Games, Inc.
Game Party 2 (Wii) – Confirmed
TNA iMPACT! (PS2, PS3, Wii, X360) – Confirmed
Touchmaster 2 (DS) – Confirmed

Natsume, Inc.
Harvest Moon Tree of Tranquility (Wii) – Confirmed
Harvest Moon Friends of Mineral Town 2 (DS) – Confirmed
Harvest Moon Island of Happiness (DS) – Confirmed

Nintendo of America Inc.
Super Mario Sluggers (Wii) - Confirmed
The Legend of Zelda (Wii) – Rumoured
F-Zero (Wii) – Rumoured
Kid Icarus (Wii) - Rumoured
Pikmin 3 (Wii) – Rumoured
Starwing (Wii) – Rumoured
Pilotwings (Wii) - Rumoured
New Super Mario Bros DS 2 (DS) - Rumoured

SEGA of America, Inc.
Sonic Attitude (DS) – Rumoured

Southpeak Interactive
Big Bang Mini (DS) - Confirmed
Mister Slime (DS) - Confirmed
Ninjatown (DS) - Confirmed

Square Enix
Final Fantasy Nebulla (DS) – Rumoured
Kingdom Hearts 358/5 Days (DS) – Confirmed
Dragon Quest IV (DS) – Confirmed
Dragon Quest V (DS) – Confirmed
Dragon Quest VI (DS) - Confirmed

THQ Inc.
All-Star Cheer Squad (DS, Wii) – Confirmed
Deadly Creatures (Wii) – Confirmed
Lock’s Quest (DS) – Confirmed
Viva Piñata: Pocket Paradise (DS) – Confirmed
WWE SmackDown vs. Raw 2009 (DS, PS3, Wii, X360) – Confirmed
de Blob (Wii) – Confirmed

Ubisoft Entertainment Inc.
Red Steel 2 (Wii) - Confirmed

Warner Brothers Interactive Entertainment Inc.
LEGO Batman: The Videogame (DS, PC, PS2, PS3, PSP, Wii, X360) - Confirmed

XSEED Games
Little King’s Story (Wii) - Confirmed