Tom Clancy's Ghost Recon: Wildlands - Ghost War Pass

Ghost War is the 4v4 Tactical PVP experience of Ghost Recon Wildlands.

With the Ghost War Pass, you will unlock 6 additional post-launch classes with a one-week early access to fine-tune your tactics before anyone else.

These classes will be unlocked from November 2017 to March 2018.

Source:

Steam Store Description