Call of Duty ends in 2020 is a misinformed internet frenzy that has somehow led fans to think the franchise is ending next year.
Traditionally, since the inclusion of Call of Duty: Modern Warfare 3, CoD games have been on a three developer cycle each year. It would rotate from Treyarch to Infinity Ward to Sledgehammer. It appears that's no longer the case.
Call of Duty Ends in 2020? No
"For 2020, Activision had originally switched things up, assigning the Wisconsin-based support studio Raven to take a leadership role alongside Sledgehammer to make a Call of Duty game set during the Cold War (likely involving Vietnam). As of very recently, that’s changed. Now Treyarch, based in Santa Monica, California, is in charge of leading Call of Duty: Black Ops 5 for 2020," Kotaku said it its report.
So, in fact, Call of Duty is not ending in 2020. It's just an absolute mess over at Activision. There's no way the publisher would let its most successful franchise skip an annual release. It's just a matter of whether or not we're getting a new Black Ops logo...
Photo courtesy of Activision/Treyarch