https://wccftech.com/fortnite-crossplay-on-again/

Oops, Fortnite has done it again. Back in September, Xbox One/PS4 crossplay was, ever so briefly, made available to Fortnite fans. Developer Epic Games quickly shut it down, blaming a simple configuration error, but, nevertheless, eyebrows were raised. Epic has been a strong supporter of crossplay, with Fortnite creative director Donald Mustard dropping this money quote at the recent Game Awards…

“Gamers want crossplay, and we at Epic are committed to doing whatever it takes to make that happen. Players deserve it.”