The Gaming INTEL site intends to hear from a trusted source that a Call of Duty: Battle Royale will be released for the Switch. It states: “Please note that this does NOT mean that Call of Duty: Black Ops 4 will be released for the Switch, as we have reliable information that this is definitely not the case.”
It should be an independent switch game, which is bundled on the other platforms with “Call of Duty: Black Ops 4”. Raven Software is said to be the developer of the “Battle Royale” version. Treyarch should not be involved, but Beenox should help out. “Call of Duty: Battle Royale” (not the final name) will appear on October 12, 2018, according to the rumor.