In a press release today Ubisoft announced:

"Starting today with the release of the Arctic Strike Map Pack on PC, Season Pass owners will be able to access all new downloadable content. The Arctic Strike Map Pack extends your Ghost Recon: Future Soldier PC experience with new multiplayer maps, a new multiplayer mode, new Guerrilla mode co-op map, and six additional weapons to give you the edge over your enemies. Order the Tom Clancy's Ghost Recon: Future Soldier Season Pass now and get all upcoming Ghost Recon: Future Soldier downloadable content."