Two new maps have been made available for Battlefield: Bad Company 2 which are free to players who have a VIP code, if not you will have to spend 1200 MSP's in order to get one. The 2 new maps are Atacama Desert for Rush Mode and Port Valdez for Conquest Mode.
For those wondering when actual new maps will be released for Bad Company 2, it would appear that it will not be until the recently announced Bad Company 2: Vietnam expansion is released. The pack is currently set for a Winter 2010 release window.
Finally you can check out a trailer for Map Pack 4 via the link below.