Sony enables Fortnite cross-play between PS4, Xbox One and Nintendo Switch

Xbox Head Phil Spencer and Nintendo President Comment on Sony's PS4 Fortnite Crossplay Stance

Fortnite' On Nintendo Switch Can Cross-Play With Xbox One, iOS And PCJust Not PS4

Getting Started in Fortnite with SCUF Basics

Update) Apparently you can play Fortnite together on PS4 and Xbox One – Destructoid

Fortnite Battle Royale cross play between PlayStation and Xbox players is “inevitable.”

Do You Need PlayStation Plus to Play Fortnite?

Fortnite crossplay (Nintendo Switch, Xbox One, PC, Mac, Mobile) confirmed, Sony blocking PS4

Load into the Lobby in Fortnite - Game Mode Select Screen Removed

How to limit child purchases on Fortnite for Android and PS4

Xbox's Phil Spencer comments on cross-play support after Sony blocks PS4 Fortnite accounts from logging in on Nintendo Switch - MSPoweruser