The Codemasters Forums herald the release of the promised patch for Operation Flashpoint: Dragon Rising as well as the free Skirmish DLC for the military shooter (thanks Charles). They emphasize that the patch is only for the retail boxed editions of the game. The Patch list outlines changes including lag reduction, support for video recording through FRAPS, along with bug fixes and other improvements. This page describes the content in the Skirmish DLC, and here's a bit from that:

The ‘Skirmish’ DLC features four new multiplayer maps and two new Fire Team Engagement (FTE) missions featuring both solo and four player co-operative play. Hunt down SAM launchers hidden in the sprawling complex of ‘Lumberyard’ and assault dug in PLA forces and fight room to room in ‘White Fang’, two tense new ‘Infiltration’ multiplayer maps. ‘Annihilation’ multiplayer maps pitch armour and infantry against each other in rolling battles across a valley in ‘Stomping Grounds’ and in ‘Force Dispersal’ military bases separated by a strategic hill become a close-quarters killing ground.