https://www.gamespot.com/articles/fortnite-521-update-patch-notes-soaring-50s-ltm-he/1100-6461177/

Epic Games has released a new Fortnite update for PS4, Xbox One, PC, Switch, and mobile, bringing a new weapon and gameplay modes to the Battle Royale, and freshening up the challenges for Save The World modes. Patch 5.21 launched on August 15 at 1 AM PT / 4 AM ET / 8 AM BST and, unlike the majority of updates, there’s was no downtime before its arrival.

For the Battle Royale part of Fortnite there are two new Limited Time Modes: Soaring 50s and Sniper Shootout. The former is described as a "twist" on the traditional 50v50 experience that places more of a focus on mobility by allowing Gliders to be re-deployed and also adding more Bounce Pads around the map. Sniper Shootout, meanwhile, is pretty much what the name suggests, with players doing battle using sniper rifles.