The high-profile first-person shooter franchise of Call of Duty has had an exclusivity deal with either Xbox or PlayStation for over a decade. These exclusivity deals have seen both Xbox and PlayStation be the first when it comes to receiving content for various Call of Duty games. PlayStation has had the exclusivity deal for the past few years beginning with Black Ops III. While PlayStation once again has an exclusive contract with the franchise for this year's entry of Modern Warfare, it will be much different from years past.
Activision has announced that post-launch content (new multiplayer maps, new multiplayer modes, special ops missions and more) will be launching at the same time across all platforms. This means that PlayStation 4 players will no longer receive post-launch content ahead of Xbox One and PC players.
The publisher explained the motivation behind this decision was to ensure that "content will be released in a way that enables all players to continue to seamlessly play together." This reasoning is not shocking considering Modern Warfare will be the very first Call of Duty game to allow players from different platforms to play with each other. This cross-platform capability would be severely hindered if PlayStation 4 players got access to content before their Xbox One and PC counterparts.
However, this lack of early access to post-launch content access does not mean PlayStation will not be receiving some form of benefit when it comes to their exclusivity deal with the franchise. Two early examples of this were the Gunfight Alpha and first Beta weekend for Call of Duty: Modern Warfare which were only available to PlayStation 4 players. Activision also has stated that PlayStation players will have an "exciting Day 1 advantage." No other information regarding precisely what this Day 1 advantage is was made available.