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Yes. Next years game will. They have a legal obligation to do so. Literally they signed a contract with Nintendo for 10 years of COD on Nintendo systems.
Past games like Call of Duty Black Ops 2 have been on the Wii U. Heck, even Call of Duty 4: Modern Warfare received a motion-controlled port on the Wii. Unfortunately, Modern Warfare 3 continues the streak of no Switch support for the Call of Duty series.