Well the flood gate's have well and truly opened this week in regards to Multiplayer info, we've been given the new class system, weapons details, attachments, how the killstreaks will work, new game type's and how the in game scoring system works.
There's simply too much to list so I'll put the basics down here and link the sites at the bottom for more info if you feel like reading it all.
There's allot of info here but all in all I think they've simplified it allot from MW3. Killstreaks dont have 3 tiers to choose from, no more weapon proficiency, no more death streaks, you've got 10 points to play with then creating a class, overall I think it looks great but time will tell how the game itself actually plays.
The major things to note:
RCXD's are definitely back, this time they are called RCC's.
Perks no longer effect your gun, only attachments effect the performance of your gun. ie there is no quickdraw or steady aim perk.
Blind-Eye are Ghost have been split again like there were in MW3. The great thing is that they only work when you are moving. So if you like to camp then your shit out of luck sorry guys.
Killstreaks are now scorestreaks and you can earn points by attempting bomb plants, capturing domination points and all that stuff. There's no support of specialist killstreaks in BO2, just the one killstreaks list containing 22 killstreaks.
Weapon proficiency's no longer exist, all weapon modifications are through attachments.
As rumoured create a class is now setup using 10 points, each item uses 1 point such as 1 perk, 1 grenade, 1 primary, 1 secondary until you've used up all your 10 points.
New thing called Wildcards that give you a little bit of flexibility with your 10 points to set up a class (see below for wildcard options)
Skorpio EVO III
Assault Shield (Metal riot shield that can be planted into the ground as makeshift cover)
FHJ-18 AA (Vehicle lock-on, two rockets)
Target Finder (Paints red squares around hostiles)
Select Fire Mode
Black Hat PDA (Get close to enemy equipment and point this data pad at it to hack it and turn it against enemies. Takes ages to hack though!)
Shock charge (a throwable stick that emits an electric shock across a surface, rooting targets to the spot)
Wildcards (Bend the rules of the ‘Pick 10′ system slightly)
Perk 1 Greed (Lets you choose a second perk from tier 1)
Perk 2 Greed
Perk 3 Greed
Perks (Note: Perks can no longer go pro)
Ghost (Now only hides you from UAVs when you are moving)
RCC — 325 points — A remote-controlled car packed with explosives.
UAV — 375 points — Shows enemies on the mini-map.
Hunter Killer — 400 points — Airborne drone that seeks out and destroys a nearby target.
Care Package — 450 points — Air drop a random Scorestreak.
Counter-UAV — 475 points — Temporarily disables enemy radar.
Guardian — 500 points — Projects microwave field which stuns and impairs enemies.
Hellstorm Missile — 525 points — An air-to-surface missile which can be scattered into a cluster bomb whilefalling.
Lightning Strike — 550 points — Launch a coordinated lightning strike on three locations.
Death Machine — 600 points — Your own personal handheld mini-gun.
Sentry Gun — 650 points — An automatic sentry gun which can be remote-controlled.
War Machine — 700 points — Grenade launcher with rapid, semi-automatic firing.
Dragonfire — 725 points — Remote-controlled quad-rotor with lightweight machine gun.
AGR — 800 points — Air drop an autonomous ground robot that searches for and destroys enemies and can be remote controlled.
Stealth Chopper — 850 points — Call in a stealth helicopter which does not appear on the enemy's mini-map.
Orbital VSAT — 900 points — Shows both enemy position and direction on the mini-map, cannot be shot down.
Escort Drone — 1000 points — Get personal air support from an escort drone.
Warthog — 1025 points — Jet aircraft that provides close air support with several strafe runs.
EMP Systems — 1050 points — Temporarily disables enemy electronics.
Lodestar — 1150 points — Lase missile targets remotely from the Lodestar.
VTOL Warship — 1200 points — Be the gunner of a powerful VTOL Warship.
Canine Unit — 1275 points — Attack dogs that hunt down the enemy.
Swarm — 1400 points — Call in a swarm of lethal Hunter Killer drones that search and destroy enemies.
GamesCom sheds light on revamped 'Black Ops 2' point and perk system - Long Island Video Game Industry | Examiner.com
The Escapist : Shoutcasting Black Ops 2
'Black Ops 2' and Treyarch's new rules for Call of Duty multiplayer | The Verge
Call of Duty: Black Ops 2 multiplayer ditches kill streaks, embraces e-sports, first screenshots • News • Eurogamer.net
Black Ops 2 multiplayer hands-on: the future starts here | VG247
Black Ops 2: Official perks & gun list revealed, new Create-a-class explained | VG247
Black Ops 2 replaces killstreaks with “score streaks” | VG247