Sony's PlayStation 4 cross-play feature is out of beta and now available to all developers

The cross-play feature is now open to any game that supports it.

Extended Fortnite Cross-Play Beta Launches on PS4 Starting Today – PlayStation.Blog

Sony Starts PS4 Fortnite Cross-Play Beta - Game Informer

PlayStation 4 cross-play exits beta, is now a full-fledged feature

PlayStation 4 500GB Console [Old Model][Discontinued] : Video Games

After six years Sony finally opens up the PS4 to cross-platform multiplayer support

Will Overwatch ever get crossplay between PC and console? - Dexerto

PlayStation 4 - Wikipedia

Sony PlayStation Portal Review

PlayStation 4 cross-play exits beta, is now a full-fledged feature

PlayStation announce cross-play and cross progression for Fortnite on PS4 with all other platforms - Dexerto

Sony stops resisting PS4 cross-play – and it's all about the PS5

PS4 Cross-Play Exits Beta, Now a Full Feature For Developers - IGN

PS4 Cross-Play Exits Beta, Now a Full Feature For Developers

Sony Announces Fortnite Cross-play Beta Between PS4, Switch, and More – NintendoSoup

The First Descendant crossplay open beta is coming in September