Earlier I shared the leaked perk list for Modern Warfare 3. Originally, it had a video in it, but Activision had the video removed due to a copyright claim. And that can mean only 1 thing: The information is correct.
The killstreak (or pointstreak) list you're about to read comes from the same source and I've seen several videos on YouTube being deleted because... yes you guessed it right. Copyright claims by Activision. So once again, we can assume the information is correct.
With the killstreak system in Modern Warfare 3, Infinity Ward did something different this time. Instead of picking your usual 3 killstreaks and jump into a game, Infinity Ward came with the idea of having 3 sets of killstreaks. The killstreaks are separated in 3 groups. The Assault killstreaks, the Support killstreaks and there is a Specialist killstreak group. Other than those 3 groups of killstreaks, we will be seeing the deathstreaks return. You will have to bare with me when it comes to the explanations of some of the killstreaks as they are kind of vague.
Assault Killstreaks:
4 Points - Care Package - Same killstreak as in Modern Warfare 2 and Black Ops
5 Points - IMS (Intelligent Munitions System) - 3 or 4 placeable landmines that can't be stunned or flashed
5 Points - Predator Missile - Same killstreak as in Modern Warfare 2
5 Points - Sentry Gun - Same killstreak as in Modern Warfare 2 and Black Ops
6 Points - Precision Airstrike - Same killstreak as in Modern Warfare 2
7 Points - Attack Helicopter - Same killstreak as in Modern Warfare 2 and Black Ops
7 Points - Little Bird Flock - Mini helicopters which patrol the map (don't know whether they can kill enemies)
9 Points - Little Bird Guard - Big helicopter which follows, oversees and protects you
9 Points - Reaper - Mortar team with 5 Predator Missiles
10 Points - Talon - Mini tank robot
12 Points - AC-130 - Same killstreak as in Modern Warfare 2
12 Points - Pavelow - Same killstreak as in Modern Warfare 2
15 Points - Juggernaut - You will be wearing a Juggernaut armor
15 Points - Osprey Gunner CPs - You control a Chopper Gunner
Support Killstreaks:
4 Points - UAV - Same killstreak as in Modern Warfare 2 and Black Ops
5 Points - Counter UAV - Same killstreak as in Modern Warfare 2 and Black Ops
5 Points - Ballistic Duffel - Drop Juggernaut PERK for the entire team
5 Points - Airdrop Trap - Drops a hacked Care Package
8 Points - SAM Turret - Same killstreak as in Modern Warfare 2 and Black Ops
10 Points - Remove UAV - Target enemies with missile
12 Points - Advanced UAV - Same effect as the Blackbird killstreak in Black Ops
12 Points - Remote Turret - Sentry you can control
14 Points - Stealth Bomber - Same killstreak as in Modern Warfare 2 and Black Ops
18 Points - EMP - Same killstreak as in Modern Warfare 2
18 Points - Juggernaut Recon Armor - Care Package drop with a Juggernaut suit
18 Points - Escort Airdrop - Same as the Osprey Gunner, except you don't control the gunner and it drops 5 Care Packages. (4 regular and 1 hacked)
Specialist Killstreaks:
2 Points - Extra perk
4 Points - Extra perk
6 Points - Extra perk
Deathstreaks:
4 Deaths - Juiced - Lightweigt
4 Deaths - Martyr - Same killstreak as in Modern Warfare 2
4 Deaths - Final Stand - Same killstreak as in Modern Warfare 2
5 Deaths - Revenge - Last person to kill you is always visible on the minimap
5 Deaths - Stopping Power - Same killstreak as in Modern Warfare 2, for 1 kill only
6 Deaths - Dead Man's Hand - Suicide bomber, run around with C4 in your hand