Super Princess Peach - Prerelease Screenshot

I'd like to point out something weird about this early screenshot of the game.
While the world map depicted here is clearly Gleam Glacier, the 6th world of the game, the name of the map is "ヒュードロやしき 3 - 1" which is the japanese name for "Shriek Mansion 3 - 1", the 3rd world of the game. It doesn't make much sense.

Maybe originally, Gleam Glacier was the third world, like Ice Land was the third world in Super Mario Bros. 3 (both are ice worlds). Gleam Glacier was probably bumped back when the difficulty of the world rose or something.

But like I said, the name of the world in the screeshot is Shriek Mansion. I doubt Gleam Glacier's original name was Shriek Mansion.