https://www.gamespot.com/articles/fortnite-downtime-scheduled-ahead-of-530-update/1100-6461345/

Epic is getting ready to roll out another update for Fortnite. Patch v5.30 is slated to arrive for all platforms--PS4, Xbox One, PC, Switch, and mobile--tomorrow, August 23, and it will introduce another new item in Battle Royale mode.

As usual, the update will be preceded by a round of maintenance, which is scheduled to begin early in the morning at 1 AM PT / 4 AM ET / 9 AM BST. Epic hasn't estimated how long the maintenance will last, but during this time servers will be taken offline, so you won't be able to jump into any Battle Royale matches until the maintenance period is complete.