Operation Flashpoint 2: Dragon Rising is the official successor to Operation Flashpoint, developed by Codemasters instead of Bohemia Interactive Studio. The game will revolve around a fictional conflict between the United States and China on the island of Skira (in the Aleutian island chain).
Weapons list (as currently known of from previews at E3 2008):
U.S. Army
Pistols
M9
Original Colt M1911 (dated 1913) - .45 ACP
Submachine Guns
Heckler & Koch MP5A2
Heckler & Koch MP5A2 9mm with "tropical" Wide forearm
Heckler & Koch MP5A3
Heckler & Koch MP5A3 9mm with slim handguard
Heckler & Koch MP5SD6
Assault Rifles
FN SCAR-L (Mk. 16)
A First Gen FN SCAR-L 5.56x45mm with M68 Aimpoint scope and Grippod foregrip.
FN SCAR-H (Mk. 17)
Fabrique Nationale First Gen SCAR-H 7.62x51mm NATO with M68 Aimpoint scope and Grippod foregrip.
M4A1 carbine
Colt M4A1 Carbine with M68 Aimpoint reflex optic and Knight's Armament RAS railed handguard and vertical forward grip - 5.56x45mm
M16A4
M16A4 MWS (Modular Weapon System) with RAS rails installed, AN/PEQ-2 IR designator, RIS foregrip, and (replica) ACOG scope 5.56x45mm. This is the USMC style set up.
Sniper Rifles
M110 SASS
M110 SASS 7.62x51mm NATO with Harris bipod and tan paint scheme.
Barrett M107
Springfield M21
File:M21 m1a.jpg M21 Designated Marksman Rifle 7.62x51mm NATO with Harris bipod.
Remington M24
M24 sniper rifle 7.62x51mm NATO, .300 Winchester Magnum.
Machine Guns
Mk. 48 Mod 0
M240
M2HB
XM312
Shotguns
M1014 JSCS
Special Weapons
M32 MGL
SMAW
FGM-148 Javelin
AT4
FIM-92 Stinger
M203 Grenade Launcher
People's Liberation Army
QSZ-92
Type 05
QBZ-95
Type 81
QBB-95
QBJ-88
QJZ89
Unknown Chinese pump action shotgun
QLB-06
Type 69 RPG
PF-89
HN-5