Season 9 of Fortnite just released, and dataminers have found a John Wick event coming sometime soon. It appears there will be tasks for players during a limited-time mode named Wick's Bounty. The challenges also reference a new gun called the Tactical Assault Rifle.
John Wick Fortnite Event Leaked in Patch 9.0 - GS News Update
A limited-time mode named Wick's Bounty is coming to Fortnite