Activision has decided it wants back in on the extraction shooter action, which is no surprise given the meteoric rise of the genre following the success of Arc Raiders, Marathon, and Escape from Tarkov escaping from early access. Modern Warfare 4 will herald the return of DMZ, which developer Infinity Ward describes as being "the definitive Call of Duty extraction experience."
Details are light on the ground right now, but here's the high-level description to give you a sense of what Modern Warfare is shooting for here: