https://www.pcgamer.com/fallout-76-will-not-support-cross-play/

Bethesda executive producer Todd Howard said earlier in the summer that the studio would love to have cross-platform play in Fallout 76, but "Sony isn't being as helpful as we want them to be" in making it happen. Today, Sony dropped a surprise announcement that it will allow Fortnite cross-play between the PS4 and other consoles. Could Fallout 76 also be a beneficiary of Sony's new spirit of openness and cooperation? 

Hines has previously been somewhat blasé about Fallout 76 cross-play, telling Eurogamer in August that "it it would be nice if I could play on my Xbox and my kid is playing on his PC and we can play together, but if we can't, OK." Interestingly, he's taken a much firmer stance about having cross-play in The Elder Scrolls: Legends, saying at E3 that it's "essentially non-negotiable."