Overwatch 2’s presence on Steam is in addition to Battle.net, so the incredible community already accessing the game through Battle.net can play as they have with no changes required. Players on Steam will still need to connect Overwatch 2 to a Battle.net account, as we require for all platforms, which enables cross-platform play and more. Players using Steam will have access to features of the platform while playing Overwatch 2, such as Steam achievements, their Steam friends list, and the ability to invite them to play in-game.
《守望先锋2》steam版是战网之外的，所以战网版的照旧玩，无需任何改变。steam版需把《守望先锋2》连接到战网账号，这样可跨平台游戏。steam玩家在玩《守望先锋2》时可以使用该平台的功能，比如Steam成就、Steam好友列表，以及邀请游戏。
——————— 下面是我自己说的，不是暴雪的 ——————
关于手机号绑定问题，一种好的可能是：类似cod19的战网版和steam版，steam版可能不再需要战网上必须有手机号，而steam国区上的手机号是允许大陆手机号的，这样就不用考虑大陆外手机号的问题了。但愿如此。
公告里说的跨平台游戏，估计是说steam版跟战网版是在同一个匹配池里。
另外也对部分有误解的玩家澄清一下：这次是相当于在steam上下载守望2的亚服版，关联上你战网亚服的账号，依旧跟原来的网易代理的国服没关系。（原来的战网中国区，跟战网国际是两种账号体系，游戏也是特供版）
steam国区，是steam国际服的中国区，不是特供版的那个完美代理的叫蒸汽的steam国区。