https://www.gamespot.com/articles/microsoft-responds-to-ps4-cross-play-news/1100-6462088/

Sony made the big, unexpected announcement this week that it will finally allow cross-play between PlayStation 4 and competing consoles like Xbox One and Nintendo Switch. The first supported game is Fortnite, while others may follow later. Now, Microsoft and other companies have responded to Sony's announcement, and it seems that nothing has been decided regarding other titles that may support cross-play down the track.

Starting with Microsoft, the company responded to PlayStation's tweet about cross-play with the raising hands emoji. As of 1 AM ET on September 26. Xbox boss Phil Spencer, who has been one of Microsoft's most outspoken proponents of cross-play, has not tweeted at all about the cross-play news. Neither has Xbox marketing boss Aaron Greenberg. That doesn't mean much, though, as tweets are just tweets and not everyone has time or interest to tweet.