Well, it is a solid speculation.

Super Mario 3D World October Trailer


Hopefully it comes with cat pajamas.

Mega Mario is back, I'm very glad it's back!

i wonder if you can go in any koopa shell also if its only an ability mario has

They already stated in the speculation video that the koopa shell shown was pink, likely hinting that it was Peach who was using that shell.

It seems you will be unable to jump in the mode you control Captain Toad. That will actually add a challenge.

Hmm, so Daisy will have a cameo as well?

im pretty sure the other two that have been circled dont look like character profile pictures...

That's just the stamp sheet; there's a stamp in every level, and you can use them to make personalized messages in Miiverse. Having a stamp shaped like a character profile does not guarantee they're playable.

they aren't supposed to. they're just stamps of rosalina.

also i figured out that the other one probably isn't daisy, i think it's the captain toad. The one you play in those green star sections.


I think it's probably a very big hint that it is. Of course it isn't a guarantee.

also:

f*** why would they put rosalina in here and not wario

Wario would be retarded

that's like asking for donkey kong

f*** you man wario is like another mario dude who'd have different stats rosalina is the most boring void-of-personality character and i have no idea why nintendo continues to try and force her popularity by putting her in random games

Nobody wants to masturbate to Wario

that's why Rosalina is still even a thing