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.

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

Sony is bringing PS4 Remote Play to PC and Mac

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

Sony Finally Enables Fortnite Cross Play Support On PlayStation 4: Open Beta Begins Now

Rocket League' Joins 'Fortnite' in the PlayStation Cross-Play Betas

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

The First Descendant crossplay open beta is coming in September

Sony Ends PlayStation 4 Cross-Play Beta, Now Available to Developers

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

Sony Testing 4K Cloud Streaming PS5 Games in Public Beta