Well-known sources Tom Henderson tweeted that in addition to "Call of Duty 19: Modern Warfare 2" and "Call of Duty: Warz", Activision is also developing "Call of Duty 20" (released in 2023) and "Call of Duty: Warzone" mobile game versions. The call of duty: Warzone mobile game version is expected to be released this year.

In July 2021, the media revealed that Activision was developing another Call of Duty mobile game, the previous "Call of Duty: Mobile Game" developed by Tencent Tianmei Studio.
Activision's own Call of Duty mobile game is run by Activision's newly established mobile game studio Solid State, which will be an AAA mobile game. In October 2021, Activision acquired Digital Legends, a mobile game developer in Barcelona, Spain, to assist in the development of the call of duty new mobile game. In addition, Beenox and Activision Shanghai are also involved.
Given the huge success of Call of Duty: Warzone and Call of Duty: Mobile, It makes perfect sense for Activision to develop the call of Duty: Warz mobile game. In recent years, several battle royale games have started or are planning to land on mobile platforms, including EA's Apex Heroes.
While Warzone's experience on mobile devices will certainly be different from the console and PC versions, Activision may find a way to somehow maintain the integrity of the core experience.