I don't think its true but i read on this Website which i cant find anymore but im still trying :(
It Said there will be 3 New Perks 3 New Guns, Titles and Emblems ,Skins for your Guns and 5 New Spec Ops Missions
The Following guns were:
Dragonuv-Sniper Rifle
Skorpion- Submachine Gun
3rd one Unknown but most likely assault Rifle
The Perks were:
Over Kill- 2 Primary Weapons
Quickhands: Swap weapons faster
Heterochromiac: Toggle Thermal Vision
and also several online modes will be added on release of map pack
EDIT: I found the Website i was talking bout earier x)
https://forums.modernwarfare247.com/index.php?/topic/18164-mw2-new-map-pack-info/