https://www.gamespot.com/articles/fortnite-update-521-patch-notes-new-heavy-sniper-a/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.

The biggest addition to Battle Royale is that of the Heavy Sniper Rifle, the name of which is fairly self-explanatory. It deals serious damage, particularly to structures, but that comes at the expense of a long reload time. It's available in Epic and Legendary versions, and the bullets it fires drop less than those of other snipers.