The next CoD has come out, made by the people who made the badly critisised CoD3.
It's built on the Cod4 engine but has gone back to WW2 setting, this time based on the eastern front (russia) and the war in the pacific (japanese). The game will feel and play pretty much like cod4 does but it's got extra features added to the mix, such as:
Online co-op with your friends
Zombie survival online with up to 3 friends
4 Vehicle maps
Flamethrowers & petrol bombs
If you're a cod fan then it's definately worth looking into, im going to buy it later on.
Have a look at the IGN review
here if you're interested.