Black Ops

Call of Duty: Black Ops preview: put your money where your multiplayer is | Joystiq
Call of Duty: Black Ops Multiplayer Interview - GameSpot Video
News: CoD: Black Ops Killstreak rewards revealed
Treyarch – “Everybody now thinks Modern Warfare 2 is this glitchy game” | PLAY Magazine
Call Of Duty: Black Ops Refreshes The FPS Multiplayer Component





Perk 1
Lightweight - Move Faster (Pro)
Scavenger - Pick up ammo from fallen enemies. Replenish lethal grenades. (Pro)
Ghost - Undetectable by the Spy Plane and the Blackbird.
Flak Jacket - Reduces explosive damage.
Hardline - Killstreaks require 1 less kill.

Perk 2
Hardened - Bullets penetrate better.
Scout - Hold breath longer.
Steady Aim - Increased hip-fire accuracy.
Sleight of Hand - Faster reloads.
Warlord - Equip two attachments to your primary weapon.

Perk 3
Marathon - Longer sprint.
Ninja - Silent movement.
Second Chance - Pull out your pistol before dying.
Hacker - Ability to detect enemy equipment and explosives.
Tactical Mask - Reduces the effect of flash and concussion grenades.
NeoGAF


Killstreaks

3 - Spy Plane (Shows enemies on the mini-map; can be shot down)
3 - RC-XD (Remote controlled car strapped with explosives)
4 - Counter-Spy Plane (Temporarily disables enemy mini-map)
4 - SAM Turret (Airdrop a placeable SAM turret that destroys aircraft)
5 - Care Package (Airdrop a random killstreak or ammo crate)
5 - Napalm Strike (Airstrike that covers an area in napalm)
6 - Sentry Gun (Airdrop a placeable Sentry Gun)
6 - Mortar Team (Target three locations to bombard with Mortar Strikes)
7 - Attack Helicopter (Call in a support helicopter)
7 - Valkyrie Rockets (Launcher with remote controlled rockets)
8 - Blackbird (Shows enemies on the mini-map; cannot be shot down)
8 - Rolling Thunder (Airstrike that carpet bombs a targeted area)
9 - Chopper Gunner (Man the turret of an attack helicopter)
11 - Attack Dogs (Call in pack of attack dogs)
11 - Gunship (Call in a heavily-armored Gunship)