Sega's list of titles for 2008 are as follows ...

The Incredible Hulk (DS and 360 - June 13; PS3 and PS2 - June 20; PC - June 27)

Beijing 2008 (360, PS3 and PC - June 27)

Samba De Amigo (Wii - August)

Space Siege (PC - August 22)

Picto Image (DS - September)

Golden Axe Raiders (360 and PS3 - September)

Sonic Chronicles (DS - September)

Yakuzza 2 (PS2 - September)

Valkyria Chronicles (PS3 - Autumn)

Sonic Unleashed (Wii, 360, PS2 and PS3 - November)

Empire Total War (PC - early 2009)

Alpha Protocol (PC, 360 and PS3 - early 2009)

Mad World (Wii - early 2009)

Aliens: Colonial Marines (PS3 and 360 - early 2009)

Here's hoping they hurry along with the Aliens shooter. :)