Activision sent out the following

 

In its first day of availability, the total number of people who connected online to play Black Ops 4 increased from last year’s release.
Black Ops 4 is an incredible game, and the community’s response to it has been amazing. We have shattered multiple digital day one sales records, and the number of people who connected online on day one to play has grown year on year,” said Rob Kostich, EVP and GM, Call of Duty. “But probably the most important thing is that the community is having so much fun across Multiplayer, Zombies and Blackout. We are so incredibly thankful for the community’s trust and support. This is just the beginning, it’s going to be an incredible journey with Black Ops 4.”
Digital downloads of Call of Duty: Black Ops 4 are based on unit sell-through on the first day of availability worldwide.  Largest day one digital sales in Activision history based on combined console and PC units sold through on the first day of availability worldwide. Largest day one digital full game sales on PlayStation Store according to PlayStation. Largest Activision Xbox One digital game sales in Activision’s history based on Activision sales data.
Call of Duty: Black Ops 4 is published by Activision and developed by Treyarch with additional development support from Raven Software and PC development with Beenox. For the latest intel check out: www.callofduty.com,www.youtube.com/callofduty and follow @CallofDutyand @Treyarch on Twitter,Instagram and Facebook.Call of Duty: Black Ops 4 is available on PlayStation®4 system, Xbox One, and PC on battle.net. The game is rated M for Mature (Blood and Gore, Drug Reference, Intense Violence, Strong Language).
Have you checked out the game yet?