The Call of Duty: Black Ops 4 beta has officially ended on PS4, Xbox One, and PC. However, Activision advises players not to delete the beta client from their hard drive in case they want to participate in the Blackout beta in September.

Did you participate in the Call of Duty: Black Ops 4 beta? And are you planning to check out the beta for Blackout – the new battle royale mode of Black Ops 4 – in September? Then Activision and Treyarch have a useful tip for you.
The current beta client of Black Ops 4 will receive an update in September
No new client for the Blackout beta: Activision Support advised on Twitter not to remove the current beta client from the hard drive if you are interested in the Blackout beta in September. Because the previous client will still be used and will only receive an update in September if you keep the current beta data on the hard drive.
You could save a lot of time: Players who have deleted the client will need to download the entire new package if they are interested.
Considering that the Call of Duty: Black Ops 4 beta already occupies around 35 GB of storage space, players with weaker internet connections will particularly benefit from keeping the client on the drive until the update. According to the developers at Treyarch, the time savings for the upcoming download will be enormous.
When is the next Call of Duty: Black Ops 4 beta? There is currently no exact date for the Blackout beta of Call of Duty: Black Ops 4. It is only confirmed that it is scheduled to take place in September 2018. However, Activision states that further information can be expected very soon.