As expected, the Call of Duty: Ghosts Invasion map pack will make its way to non-Xbox platforms this July 3. In preparation of that, Infinity Ward is implementing a double XP weekend for all platforms.
Announced by the Infinity Ward Twitter, the double XP event should be for all game modes of the shooter and starts today.
— Call of Duty (@CallofDuty) June 26, 2014
If you can’t make it, I wouldn’t worry much, as most Call of Duty games have double XP weekends once a new map pack hits. You can check how the Invasion expansion looks with this video detailing the new maps and the new episode of Extinction.