Microsoft first announced its plans for a 10-year deal with Nintendo back in September of last year. These plans detailed that Microsoft was committed to bringing the Call of Duty series to the Nintendo Switch, provided that the merger with Activision Blizzard was approved.
In more recent developments, president and vice chair of Microsoft, Brad Smith, has confirmed via Twitter that Microsoft and Nintendo have since signed the contract. The binding, 10-year contract will bring the Call of Duty series to Nintendo players, “the same days as Xbox, with full feature and content parity.”