With coronavirus raging and a bona fide live game hit on its hands, it seemed likely Activision would drop teasers for its next Call of Duty game within the structure of Call of Duty: Modern Warfare and Warzone. Now it appears that's happening, as a mysterious new message introduced in Season 5 looks like something out of Black Ops.

Players are randomly receiving blurry, glitched messages saying "Know Your History." GameSpot confirmed the message during a Warzone session, but it appears so quickly you could easily miss it. Another part of the glitched message appeared to show a message in Russian.

The allusion to history could be a reference to the rumored Black Ops: Cold War. That would set it in a historical context, and Black Ops is known for its mind-bending plot elements that revolve around false memories and other light sci-fi elements.