UPDATE 21/5/20: Microsoft has now dated Sea of Thieves' Steam release for 3rd June. As previously announced, below, it'll include full crossplay with both Windows 10 and Xbox One editions of the game.
Whether it's with a friendly wave of your hook or a cordial cannonball barrage, get ready to welcome countless fresh crews and new legends - Sea of Thieves is coming to Steam on June 3rd! pic.twitter.com/kL0cxm1Qt4— Sea of Thieves (@SeaOfThieves) May 21, 2020
UPDATE 2/4/20: Sea of Thieves will get a Steam release, which will include full crossplay with the game's existing Windows 10 and Xbox One versions.
You can wishlist it today, Microsoft said, with a launch date to be announced "soon".
The news comes as Rare's buccaneering pirate simulate passes a milestone of 10 million unique players, including those who've jumped aboard via Xbox Game Pass.
Sea of Thieves first launched in 2018 and has been kept well updated with new places, stories and er, parrots since then. And it'll remain in development for the foreseeable future, too, even as a second team at Rare develops fantasy adventure Everwild.