Below is a brief rundown of recently released addons/mods...
Pedagne Mod have released a number of Italian themed addons: SH34D & AB205 (helicopters), LR90 (landrover), Italian Navy Commando (Homo sapien) & PM12 SMG (sub-machine gun).
Downloads - Helicopters, Landrover, Commando, SMG
Nemesis6 has released version 1.2 of his "FlashFX" addon, this improves/adds special effects for certain things such as explosions, rockets, etc.
Forum thread - Download Link
FDA Team have released a Glock18C.
Download Link - FDA's website.
JR (not Ewing) has released a S&W 4506 .
Download Link - JR's website.
Pathy has released a shotgun pack containing six different shotguns.
Forum thread - Download Link
Operation Airwolf mod team have released a beta of the "Redwolf" helicopter.
Forum thread - Download Link - Operation Airwolf website.
Fighter has released version 0.9 of his Autumn version of Nogova.
Tips: Some people have trouble downloading from Ofp.info, if you do then ensure that the "Use Passive FTP" option in IE is ticked/selected, if that still doesn't help then download and install a download manager such as getright/gozilla/flashget/etc.
Also, addons often require other addons to function, so be sure to read the readme file carefully if you're struggling to get something to work.