Reportedly, Activision has pulled the Call of Duty game planned for 2023, leaving the series without a major release next year. In its place will arrive a new free-to-play game and more content for both CoD: Warzone 2 and CoD: Modern Warfare 2022. Apparently, Activision will instead release Treyarch's next CoD game in 2024.
https://www.notebookcheck.net/Activision-to-skip-major-Call-of-Duty-release-in-2023-and-focus-on-additional-content-for-existing-CoD-games.603746.0.html