Srry I posted this in the wrong section earlier...

Yup, BTW Modern Warfare 2 is not part of the Call of duty series..

*Vehicles will be in MW2 - TRUE
*M16 will return, using stopping power will only be OHK at head, neck, and torso (abdomen, limbs, and hands/feet will not)
*Ak47 and M4 will return, unknown if there are any changes
*M40 will return, ACOG damage boost will be fixed
*Scorpion, P90, M21, R700, G3, G360 will not return
*There are more unknown weapons that will not return
*New sniper rifle: SR25M (United states forces)
*New Assault rifle: Diemeco C8 (Canadian forces M4 equivelant)
*New Assault rifle: L85A2 (United Kingdom forces)
*Total weapons in multiplayer are said to be around 35
*Favourite Modern warfare 1 maps will return
*Helicopters, air strikes, UAV will return
*Red dot sightings will come in different shapes for multiplayer (circular, square, original)

Theres more but too lazy to write...
Here's the source: http://gamersnetwork.oxyhost.com/forums/index.php?topic=8.0
You can find the trailer there too