https://www.gamespot.com/articles/fortnite-servers-down-with-new-update-coming/1100-6457784/

Update: Fortnite's servers are currently down on PS4, Xbox One, PC, and mobile while developer Epic rolls out the game's new v3.4 update. There's currently no indication of when servers will be back online, but we'll update when they are. Original story follows.

Play Fortnite now while you still can. There will be "extended downtime" tomorrow, March 29, as part of the rollout of the battle royale game's newest update.