While the trailer seemed to imply that the Expansion Pass would be a big deal for Splatoon 3 players, Wave: 1 Inkopolis offers almost nothing.
Effort Post: The Way Splatoon Addresses “Othering” is Noteworthy and Inspiring : r/splatoon
Splatoon 3's Inkopolis DLC Might Be Nostalgic, But It's Totally Shallow
Massively on the Go: Splatoon 3's new season and paid DLC creatively blast the past
Splatoon 2: Octo Expansion gives English introduction for Mem Cakes, Iso Padre, C.Q. Points
Blackbelly Skatepark Returning to Splatoon 2
Fact 16: I have no idea if this was intentional in any way, shape, or form : r/splatoon
Effort Post: The Way Splatoon Addresses “Othering” is Noteworthy and Inspiring : r/splatoon
Play as an Octoling in Splatoon 2 Octo Expansion
Has Splatoon Become the New Nintendo Mascot?
Splatoon 3 Review Goomba Stomp Magazine
Game Reviews, Page 3 of 98
Splatoon 3 DLC includes Inkopolis and new campaign