Although 'Diablo IV' will take a long time to come, Blizzard has some very concrete plans for its release. So Diablo IV should appear not only on all platforms at the same time, also the Crossplay support should be then immediately available.
Allen Adham, Co-Founder of Blizzard Entertainment & Executive Producer, who considers Crossplay to be an exciting feature and one of the goals to be implemented in the release, has now commented.
"We are very excited about Crossplay," said Adham. "There are technical details and details to be clarified with the first parties, but it is our goal to support Crossplay."
In order for this circle to close completely, Diablo IV requires a permanent Internet connection, even if you can be alone, in a group with friends or in PvP. The best way to connect everything and everyone together to ensure the best experience is to have a permanent online connection.
When Diablo IV appears, is currently still unclear.