3 types of killstreak selection, Assault, Specialist and something else, Specialist, WIN PERKS for kills, NO RESET OF KILLS WHEN DIE, and are able to get EVERY perk. When you get all perks, if you die you go back to 3.
Earn attachments for guns by leveling them up - use them more.
Softcore LOOKED 2-3 hit kill.
Prestige shop, achieve things for prestiging (An actual reason to prestige ?!?)
16 Multiplayer maps IMMEDIATELY
''Elite'' membership for year, get all DLC free OVER 20 DLC. Not just maps. Guns, Spec Ops, Single player missions. Gonna cost £200000000000000000(i.e $49.99 for the year) All DLC will cost $60 for the year. Elite gets all stuff noted below.
Level up CLANS on MW3. Level depends on members' level, K/D etc, More detailed guide for guns/maps etc. GET ELITE IF BUY HARDENED COPY OF MW3
Multiplayer graphics look very similar to a cross between MW2/CSS, actually looked good.
Last couple of years I've done a fantasy football thing with whatever clan I've been in/playing with. I think you can win a DVD player made in Iraq or something if you win the whole thing. It's normally a good laugh, so if you'd like to sign up the website eees http://www.dreamteamfc.com/fantasyfootball/1112/
Whoever the hell makes TF2 has made the game absolutely free to download and play. Really fun game, played it far too much and would definately recommend installing it!