Activision has released a bit more information about PSP version of Call of Duty, including its official name and some screenshots.
Call of Duty: Roads to Victory, it's called, and it's in development at Amaze, who will be aiming to get the game done in time for a spring 2007 release.
Like the other games in the World War II first-person shooter series, you play as multiple characters - in this case an infantry soldier in the 82nd Airborne, a Canadian First Army rifleman and an elite British Para Regiment commando.
We're promised "mounted machine gun battles, sniper encounters and aircraft attacks" across "13 intense battles", with "scrupulously honed" control schemes, four of which will be available so you can choose the method of tossing grenades, targeting enemies and leaping between standing and prone that suits you.
On top of that, there should be multiplayer with support for between four and six people, and modes including Deathmatch, Capture The Flag and King of the Hill, as well as unlockable weapons, artillery, vehicles and armour to add some replay value.