It looks like the leaked details that
were reported last month have been apparently validated in a
UK-based games magazine, plus news on multiplayer.
For starters the game won't be known as Call of Duty 5, it will instead bear the grand title of
Call of Duty: World at War and will be set primarily in the Pacific during World War II, although you will also be able to play as the Russians as they invade Germany.
As
reported previously Call of Duty: World at War will be released on every platform except the PSP and will be developed by Call of Duty 3 creators
Treyarch with specific teams working on different versions.
The game will be built on the Call of Duty 4 engine but various enhancements will be added, for example burning down buildings and foliage.
As for multiplayer for the first time in the Call of Duty series there will be a co-op mode for up to four players. Vehicles will also feature as well as squad-based elements. Multiplayer perks will also return including some of those from Call of Duty 4, but will be more suited to the time period.
Treyarch have stated that Call of Duty: World at War will be the 'darkest one yet' having had two years dedicated to it's development in comparison to Call of Duty 3 in which they only had eleven months.