Modern Warfare 4 Season 1 is set to add X01, a new DMZ Black Site, on Nov. 6

X01 is slated to arrive with Modern Warfare 4 Season 1 on Nov. 6, 2026, according to Call of Duty. The publisher describes the new DMZ Black Site as a multilevel weapons facility with equipment unavailable elsewhere. Ghost will guide Operators through new DMZ Orders. Call of Duty warns of heavy resistance and extraction points that begin to close, but does not detail the steps players must complete to escape.