http://www.pcgamer.com/fortnite-battle-royale-reveals-limited-time-sneaky-silencers-mode-with-new-weapon/

Fortnite's free 100-player battle royale mode welcomes its first update of the year today, bringing with it a new weapon and a stealth-driven limited-time mode. 

The new Silenced Pistol encourages players to showcase their "stealthy skills" once picked up from treasure chests, supply drops or as floor loot. Likewise, the new firearm can be found as an Epic and Legendary rarity. It looks like this: