What the launch announcement covered
Blizzard announced on June 12, 2022 that Overwatch 2 would launch on October 4 as a free-to-play live experience. The announcement listed Windows PC, Xbox Series X|S, Xbox One, PlayStation 5, PlayStation 4 and Nintendo Switch. It described early access to a new player-versus-player experience with heroes and maps.
The words early access and live service matter. They describe an evolving release, rather than a finished package containing every feature ever shown during development. In particular, this announcement should not be used as proof that all proposed story content arrived with the October PvP launch.
Source [1]Free access and paid content are separate questions
A free-to-play entry point removes an upfront game purchase for that experience; it does not mean every optional cosmetic or bundle is free. Likewise, a platform list at launch is a historical record, not a guarantee about every later hardware or service arrangement.
Minecraft's Trails & Tales notes provide a contrasting kind of release document: an edition-specific feature list for a numbered update. Checking the release type helps a reader know whether an announcement describes a whole game, an update, a test or a time-limited event.
Source [1]