Activision is planning to drop support for PS4 and Xbox One consoles in Call of Duty: Warzone later this year. Players will need to upgrade to a PS5 or Xbox Series S/X console to continue playing once season 6 of Call of Duty: Black Ops 7 concludes.
Call of Duty: Warzone will be removed from PS4 and Xbox One storefronts on June 4th and will no longer be available to download. Activision will then remove the in-game store on those platforms on June 25th. The game will cease to be playable once Call of Duty: Modern Warfare 4 season 1 begins later this year.
Source: Call of Duty: Warzone is ending PS4 and Xbox One support this year