It is now possible to queue for "Crossplay Multiplayer Quick Match" : r/Rainbow6
Rainbow Six Siege gets PS5, Xbox Series X cross-play with PS4, Xbox One - Polygon
Crossplay Has Officially Been Added To Rainbow Six Siege! (PC, Stadia & Luna) - YouTube
For Honor CROSSPLAY FAQ
Rainbow Six Extraction Crossplay Guide: How to Invite Cross-Platform Friends | Attack of the Fanboy
Tom Clancy's Rainbow Six: Extraction - PS4 | PlayStation 4 | GameStop
Rainbow Six Siege on Twitter: "Just announced at Ubisoft Forward: 🖱️PC, Stadia, and Luna Crossplay 🎮Console Crossplay ♻️Cross-progression between all platforms 📺 Tune-in for more announcements: https://t.co/ika7X3N1aY" / Twitter
How to Enable Cross Play - Tom Clancy's Rainbow Six Extraction Guide - IGN
PS4, XBOX ONE & PC Cross Platform? - Rainbow Six Siege - YouTube
Is Rainbow Six Siege cross-platform? | Digital Trends
Is Rainbow Six Siege cross-platform? | Digital Trends
All PS5, PS4 Crossplay Games | Push Square
Is Rainbow Six Siege Crossplay? [PC/PS4/Xbox]
List of all Xbox cross platform & cross play games | Windows Central
Is Rainbow Six Siege crossplay between XBOX, PS4 and PC? | Esports.gg
Rainbow Six Siege is finally getting cross-play and cross-progression - Polygon
Is Rainbow Six Siege crossplay between PC, PlayStation, and Xbox? - GameRevolution
Petition · Tom Clancy's Rainbow Six Siege Cross Platform Platform Progress · Change.org