Activision has put out a statement on Xbox Game Pass, noting that there are no plans to include games like Call of Duty or Diablo 4 in there this year — while offering hope for next year instead.

source https://www.windowscentral.com/gaming/xbox/activision-offers-a-timeframe-for-xbox-game-pass-inclusions-ahead-of-call-of-duty-modern-warfare-3s-launch