The Pokémon Pokopia Expansion Pass includes three parts.
Nintendo describes the paid pass as a three-part package adding Pokémon, towns, and other features. Part 1 is Bubbly Basin, released on August 4, 2026.
The remaining schedule separates the later content into two more releases: Part 2 was scheduled for late 2026, while Part 3 was scheduled for 2027. This structure is why the pass is described as three-part content rather than a single expansion.
Players may confuse the number of parts with the number of new towns or Pokémon included. The question asks about the release structure of the pass itself, not the quantity of individual additions inside each part.