https://www.pcgamer.com/watch-the-call-of-duty-black-ops-4-reveal-event-here/

Activision will reveal Call of Duty: Black Ops 4 in a livestreamed event beginning at 10am PT/1pm ET today, and you can watch it all right here. 

Treyarch has already effectively confirmed that there will be a Zombies mode—not much of a surprise there. The bigger questions are whether it will have a single-player campaign, and whether it will dive into the battle royale brawl. Rumors that surfaced last month suggested "no" to the former, and "yes" to the latter.