Modern Warfare 4 launches October 23 and won't be on Game Pass at launch
Call of Duty: Modern Warfare 4 releases October 23, with campaign early access starting October 16. Activision reminded players it won't be on Xbox Game Pass at launch. You'll need to buy it outright, from $70 for the base edition up to $100 for the Vault edition.
Game: Call of Duty: Modern Warfare 4

