https://www.gamespot.com/articles/new-fortnite-battle-royale-limited-time-modes-and-/1100-6456692/

Since the short-lived 50v50 mode it introduced back in December, Fortnite developer Epic has been regularly holding limited-time events for the game's free Battle Royale mode, and even more are on the way in the near future. In an update on its official website, Epic gave players a peek at some of the limited-time modes it plans to hold for Battle Royale soon, including the return of the 50v50 event.

According to Epic, approximately five limited-time modes will run in Fortnite: Battle Royale "in the next month or so." The developer hasn't detailed which of the events will be held first, nor has it provided a time table for when they'll roll out, but one of the modes players can expect to play is another 50v50 event. Unlike the previous version, Epic says this one will be "closer to the 50v50 trailer experience," with more supply drops and a bus for each team.