Call of Duty: Modern Warfare 3 has finally closed the circle and arrived on the PC, according to Raven Software's official Twitter account. This is the same content (the Liberation, Piazza, Overwatch and Black Box maps, along with new Spec Ops missions Black Ice and Negotiator) that originally arrived on the Xbox 360 back in March.
Raven says there is one small consolation for PC gamers who've been made to wait so long. The company has added Infected and FFA Gunplay modes to the Community playlists, so you can throw down on those if you like. The collection itself is $14.99, available on Steam right now.