Perhaps in compensation for the long wait, Capcom has promised that the PC version of Resident Evil 6 will include additional content which our slimy console brethren will have to pay for, the newbs.
The extra content consists of four multiplayer modes, the highlight of which is Siege mode. Although this was described in early press releases, it was replaced before launch and will debut in March on all systems. Supporting two to six players, Siege Mode has players in two teams, attacking monsters or defending humans, trying to eat/protect a lone rookie BSAA agent, controlled by AI. Each game consists of two rounds as teams alternate between roles. See it in action below.
Existing multiplayer modes Survivors, Predator and Onslaught will be offered alongside Siege as free downloads for PC users at launch. Resident Evil 6 is due on PC on March 22, and a benchmark will be available in February.