As has previously been understood, Overwatch 2 will replace the current game at launch. In essence, current owners of Overwatch will download a patch and the game will become Overwatch 2, with all the associated changes to multiplayer.
For example, the game will change to a 5v5 format and introduce various balance alterations. The promised PvE campaign mode is slated to release in 2023.
The clarification came via a Reddit AMA. In a post from the Overwatch 2 Game Director, Aaron Keller, stated that the game’s launch on October 4th represents the beginning of Early Access.
He added, “We’re using the term Early Access to indicate that this is just the start of many new things coming to the game.” The plan to replace the original Overwatch also fits in with the new free-to-play model.
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