Little information is currently known about what Treyarch is working on for 2018 Call of Duty title, however a new job listing on Treyarch’s site for a System Designer (Combat) may suggest that the 2018 title they are working on will be set in the modern era.
The Systems Designer job has a requirement of: “Deep knowledge base of firearms and modern military technology.”
Treyarch’s last title, Call of Duty: Black Ops 3, has been one of the biggest Call of Duty games on the new generation of consoles, and still continues to be one of the most played Call of Duty games. Black Ops 3 of course was a future-based title, Treyarch’s second future title after Black Ops 2.
Treyarch has never made a modern-era Call of Duty title before. All of their Call of Duty games so far are past-based or future-based titles.
Activision has not announced any details on Treyarch’s next title.