Here Battle(non)sense compares the netcode of the final version of Call of Duty:Black Ops 4 to the previous beta.
No single-player story mode in Black Ops 4
According to reports Call of Duty Black Ops 4 will not ship with a single player campaign, which will make it the first mainline Call of Duty to ship without a standard campaign.
Sources describe an emphasis on cooperative modes as a potential stand-in for the typical single-player campaign experience. A battle royale mode has also been mooted, which isn’t surprising considering the success Fortnite and Playerunknown’s Battlegrounds.
Treyarch are set to comment on May 17th, with their reveal.