With the Survival Mode of Call of Duty: Modern Warfare's Special Ops co-op component being a classic horde-style affair where players fend off against waves of attackers. This mode, part of the game, will be exclusive to the PlayStation 4 release until October 1, 2020.

Special Ops will be available on all platforms, but only the core co-op mission part.

The news naturally sparked some disappointment from fans, especially with Call of Duty: Modern Warfare's multiplayer supporting crossplay and map parity. Developer Infinity Ward posted the following statement on Reddit.

Lots of discussion and reactions to yesterday’s news about Special Ops. We know you have questions and we want to clarify. To be clear, our all-new Special Ops mode will be releasing on all platforms on October 25th. We’re looking forward to revealing Special Ops on October 8th. When we launch on October 25th, everyone on all platforms will be getting Modern Warfare which includes Campaign, the all-new Special Ops mode and the entirety of Multiplayer, which is a massive experience we’ve worked to create. Special Ops Survival is an additional, classic mode that will be available on PS4.

We have made many changes this year with the goal to make the entire experience better for all of the Call of Duty community, including no season pass, crossplay across all platforms, and that all post-release maps and modes will be coming to all platforms at the same time. We understand that some may still be disappointed to not be able to play classic Special Ops Survival day one, we hear you. Please know that we are working hard to make sure this is the best Call of Duty we’ve ever made and the best experience possible for fans.

Which essentially outlines that as the series moves away from platform-timed map pack releases and expansions, the deal with Sony means an exclusive mode - available for a year.