Is Overwatch Cross-Platform 2020? Blizzard still doesn't plan on bringing cross-platform play to Overwatch.
Currently, Overwatch is treated entirely separately on each platform it is available on. Although the game is available on PC, PlayStation 4, Xbox One, and, most recently, Nintendo Switch, players must buy separate copies of the game if they want to play on different consoles. Account progress, competitive rank, skins, and everything else account-related is also console-specific and cannot be linked across platforms. As such, the game doesn't allow for any cross-platform play either.
Is Overwatch Cross Platform 2020? Plans for Cross Platform Play
Fans have been asking for cross-platform play since Overwatch launched in May of 2016. Blizzard has repeatedly mentioned looking into it but have yet to provide the feature. In an article from Oct. of last year, principal producer Wes Yanagi told GameSpot that cross-platform play was "compelling", but that "the truth is that implementing cross-play for Overwatch is more difficult than people realize". We shouldn't expect cross-play for Overwatch any time soon.
Although Blizzard has no plans for Overwatch cross-platform play, they have confirmed Overwatch and Overwatch 2 players will play PvP modes together. Overwatch 2 is adding new PvE modes and hero skins to the current modes familiar to Overwatch players. Only Overwatch 2 players will have access to these new modes and skins but competitive game modes will feature Overwatch players as well. Overwatch players that don't upgrade to Overwatch 2 will be able to play competitive modes with players that bought the new game but they won't have access to the new modes or skins.
Overwatch 2 is still without a release date.