Ready for some weekend warfare? Starting at 10AM PT on April 3, free-to-play Warzone players can jump into Call of Duty: Modern Warfare Multiplayer for free. Thats right: all Modern Warfare and free-to-play Warzone players can square up together in a varied and fast-paced Multiplayer Moshpit, all weekend long.
Source: N4G PC Modern Warfare Multiplayer Free Access Weekend