https://www.gamespot.com/articles/fortnite-battle-royale-brings-back-50v50-limited-t/1100-6458157/

A new limited-time mode is starting soon in Fortnite: Battle Royale. Following the release of the game's 3.5 update on PS4, Xbox One, PC, and mobile, Epic is planning to kick off the 50v50 v2 event, a modified version of the game's very first limited-time mode.

As its name suggests, 50v50 v2 pits two teams of 50 players against each other. In this mode, players will have full access to the island for 10 minutes before the storm begins closing in. Supply drops will also fall every two minutes in batches of three to six, but they will only land within the final storm circle.