just done some closer analysis
im pretty sure in that part of the trailer with the 'unknown gun' (as said in JCBabes analysis) the guy at the window is holding a G36C which we already know about.
i did more research on the A-10 drone/plane and discovered its primary use by the military is destroying tanks so could it mean that in multiplayer we have vehicles and the A-10 will be used to combat tanks?
there are a lot of APC's in the trailer but notice how a lot lack outside armament such as machine guns? therefore i believe they may feature in the multiplayer as ways to get around the supposedly much larger new maps.
destruction is very prominent in this trailer (do i need to give examples? lol) so the developers may be looking to stop this loss of fans who are attracted to the more destructive games by adding destructible environments.
there definetly wont be a return to the simpler '3,5,7' killstreaks of earlier CoD's as we see the AC-130 in the trailer making a comeback. i believe that non stackable killstreaks form Blops will return to this game as a way to deter campers.
unfortunately the game engine may seem familiar to some when they see the animations but it is a far improved engine with graphics for example. not a new engine
at the beginning of the trailer, when the player is passed a mag, we see the M4 carbine, difficult to say whether its the A1 yet but it does have noob tube on it. also from that scene, what interests me is why there is only two of you which could mean some classic stealth missions
when the M4 is loaded we see it has scoper coupled with a holographic sight and a grip. from this i would say the multiplayer could feature multiple attachments up to a sensible amount
in the 'FRANC3' section we first see an American soldier (he has the badge on his arm) in the heli JCB pointed out. perhaps America are invading to get to Russia (unlikely) or the European union has decided to join in Americas side. this would also explain the inclusion of only three EU countries apart from America '3NGLAND, FRANC3 G3RMANY'.
in the FRANC3 section we again see the M4 with noob tube
i saw tactical insertions in the slower scenes though i hope they dont return
i agree with JCB about the return of the AK47 though i spotted it at the part where the 'prisoners' are lined up, i also saw a soldier with an M9 silenced and torch. this could hint towards fully dark maps like what JCB suggested on the other thread
i also think i saw an RPD in the part with the men walking in front of the tank slowly down the street but the image is a bit blurry.
the scene with the lone soldier with the light behind him is obviously the aftermath of the earlier subway crash. the soldier has a silenced weapon with a curved ammo mag suggesting AK? or perhaps in my eyes going dodgey.
we then see another silenced MP5 with a soldier covered in shotgun shell belts so im guessing there will be shotgun primaries in this game.
another G36C is seen for a brief moment with that guy firing blind over a wall
more silenced MP5's in the breaking and entering scene and then a russian cry is heard suggesting stealth missions in Russia? or just the SAS taking back London.
next we see US marines scuba diving into somesort of undeground tunnel that has been flooded suddenly as there are cars still there but not fast enough to dislocate them.
it is clearly seen on a traffic sign that the tunnel is in 'Brooklyn 1.5' so New York is being cut off by flooding
next thing we see are civilians running with troops, escort mission?
then a gameplay part of you shooting a Russian Hind (i think) from a helicopter with a vulcan machine gun with explosive rounds? not as good at JCB with technical stuff :L
we then see a SAS soldier vaulting into the London underground which means a chase which leads up to the de-railing of the underground train.
the scene with you ramming the car appears is very quick but i managed to look at it frame by frame for closer analysis. it appears two men are driving in the front of a left hand drive car so its in anywhere but england, im thinking germany or america. in the back there is a man in a suit with a brown bag over his head. I think this is a risky rescue operation or assassination, either way it will make for a great mission
then it ends with a lot more destruction of New York
i hope this sheds more light on stuff
i only did it to take a break from chemistry revision, if anyone wants to help me find an easy way to learn electrolysis in return in would be much appreciated haha
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Subject: MW3 reveal trailer - looks rather good :) 
"Cleatus"
