Microsoft released seven picture packs and four themes from Call of Duty 3 onto to Marketplace today. Xbox 360 owners in all regions can download the picture packs at a cost of 80 points each, and the themes at a cost of 150 points each. The list:

Picture Packs
Call of Duty 3 Brands Picture Pack
Call of Duty 3 Flags Picture Pack
Call of Duty 3 Heroes Canadian Picture Pack
Call of Duty 3 Heroes French Picture Pack
Call of Duty 3 Heroes Polish Picture Pack
Call of Duty 3 Heroes US Picture Pack
Call of Duty 3 Weapons Picture Pack

Themes
Call of Duty 3 Concept Theme
Call of Duty 3 Heroes Theme
Call of Duty 3 Nations Theme
Call of Duty 3 Pin-Up Theme

Thanks to Major Nelson for the info