Following in the footsteps of Xbox owning gamers, PlayStation and PC Call of Duty fans will be able to get their Onslaught on in Call of Duty: Ghosts from the end of this month, when the first content pack lands on February 27. The four new maps and new Extinction scenario cost £11.59, or can be picked up as part of the Season Pass (£34.99). More details on the included content can be found here.
It's also worth noting that with this latest release, all formats will be covered, except for Wii U. There's still no word and so we've reached out to Activision and will update you when we know more.