PlayStation fans will be pleased to know that Killzone: Shadow Fall’s multiplayer will be free for all PlayStation 4 players for one week, starting 3rd March 5pm PST. This will mean you will not require PS PLUS to play the Free Access client this week.
Also special Warzones will be set up for you to play the just the new maps, and compete on global leaderboards for Capture and Team Deathmatch game modes. All clans, including trial players, will be eligible for prizes in the Clan Community Challenge***. There will be Warzones for those that enjoy the up close and personal touch of smaller skirmishes as well as those of you who want the epic scale of 24 player games. Additionally, our top players will be streaming Clan Battles; you can find the link to the streams in-game.
Via Killzone Blog