https://www.pcgamer.com/battlefield-5-battle-royale-gets-duo-play-but-only-until-monday/

Battlefield 5's Firestorm battle royale mode currently supports solo action or four-player squads, but this weekend—as of right now, actually—you can try your luck with two-players squads in a new Duo mode. Duo play will be available until 10 am UTC (3 am PT/6 am ET) on April 15, at which point Electronic Arts will shut it down and see what everyone thinks. 

"It’s our first time putting Duo out into the wild having started work on the mode much later in Firestorm's development. We love it, and we think it’s a great addition to the game, but we recognize best that we’re better hearing that from you, and we’d appreciate your support in helping to make it a strong addition to Firestorm, and Battlefield 5," EA community PartWelsh wrote on the Battlefield forums.