Unlike Black Ops 6, previously released Call Of Duty titles grant early access to the campaign mode, for players who pre-order the title, but access to multiplayer matches to everyone during the official launch of the game.
Activision Explains Why COD: Black Ops 6 Won't Have Any Early Access to Campaign Mode
In a statement shared with Call Of Duty news website Charlie Intel, Activision confirms that Call of Duty: Black Ops 6 would be sticking with a single global launch around October 25, 2024, with no early access benefits for any player. As a result, players who are eager to try out what the Call Of Duty: Black Ops 6 narrative campaign's complex storytelling has in-store for us, would have to wait till its official release. They're going to be focusing on a massive global launch for all game modes on October 25.
Unlike Black Ops 6, previously released Call Of Duty titles grant early access to the campaign mode, for players who pre-order the title, but access to multiplayer matches to everyone during the official launch of the game. 
Unlike Black Ops 6, previously released Call Of Duty titles grant early access to the campaign mode, for players who pre-order the title, but access to multiplayer matches to everyone during the official launch of the game.