One guy from russian site found some interesting in Crysis 2 demo files. Maybe lie, maybe not, I don't know:
List of SP maps/missions:
Alien Vessel
Battery Park
Bryant Park
Central Park
Central Station
City Hall
Convoy
Downtown
FDR
Flooded Streets
Hive
Intro
Madison Square
Prism
Roosevelt
Spear
Terminal
Times Square
Warehouse
List of MP maps:
Alien Vessel
Alien Vessel Small
Citi Hall
Collided Buildings
Downtown
Foleys
Liberty Statue
Lighthouse
Pier-17
Rooftops Gardens
Terminal
Trinity
List of MP modes:
All or Nothing
Assault
Bomb the Base
Capture the Flag
CoopCrash Site
Extraction
Instant Action
Power StruggleTeam Instant Action
Maybe not all will available after release.
Weapons:
AGL
AY69
C4
DSG1
Feline
Flashbang
Frag Grenade
Gauss
Grendel
Hammer
HMG
Hologram
Jackal
JAW
Kvolt
Ltag
Majestic
Marshall
Mike
MK60
Nova
SCAR
SCAR AB
Sentry Gun
Smoke Grenade
Swarmer
Vehicles:
A10 Simple
Blackops APC
Blackops Helicopter
Blackops LTV
ICV
LTV
Marine Helicopter
VTOL
US Tank
US VTOL
US VTOl Transport
Alien Gunship
Alien Transport Ship
Alien Drop Ship
All files have prefix cw2.
Hmm... It's need verification...
All that is listed is true, someone uploaded the 360 files from the crysis 2 demo online

What I am wondering though... Is if Crytek is going to actually use all those modes or not, or if they plan to change it on release day.