We are probably getting a stage called "Milky Way Wishes" from Kirby Super Star... and Nova has a big role in the stage.
We had Green Greens, Halberd and Great Cave Offensive. Once we're through Dyna Blade and Milky Way Wishes, we'll finally get something outside of Super Star!
You know,
after Megaton Punch, Gourmet Race, Samurai Kirby and The Arena get their own stages...
Can't wait to see Cookie Country in Smash 11!
A remark I put here:
I've noticed that, with all the games released after the time the Smash 4 base roster was decided, we can at least expect new stages for each of the Smash 64 8 starter characters for the next Smash like:
Mario Odyssey stage
Tropical Freeze stage
Breath of the Wild stage
Metroid Prime 4 stage
Yoshi Switch stage
...
Star Fox Zero stage
Sun and Moon or Pokémon Switch stage
I feel like Mario is much more likely due for a Super Mario 3D World stage, considering that Mario's represented game is always a generation behind Melee onward. Super Mario 64 in Melee, Super Mario Sunshine in Brawl, Super Mario Galaxy in Wii U, so onward to Super Mario 3D World in Switch.
Metroid I'd likewise sooner expect SR388, between Samus Returns being further along as well as the fact that it seems like Smash is generally very light on the Prime series over Japanese-studio games in the series. I doubt Prime Federation Force or Prime 4 will get much in representation.