TheCJBrine
Smash Legend
This is definitely possible. The images from the games may have also just been taken from the rifts in the Magicant stage, since apparently that recolored zombie sprite is from there. Hopefully this is true and the sunflowers weren’t just added exclusively for the image.And also if you want me to do the opposite and instead want hopes, there also exist the possibility that is a new Smash stage but they didn't made the skybox yet, so they used the one for Tortimer's island, which would made sense because they are working on so much stuff with all these new characters and stages that they didn't had time for that.
The fact that is the background of Tortimer's island confirms that is something Smash related, it has to be.
Also, Stages for characters don't necessary need to be a stage of the character itself, but it can be a stage of the video game the character is from, it could be a Tazmily stage, with some NPCs in the background and even Duster finally getting a 3D model.
Also, from the 6 images, 3 are from Earthbound games and 2 are from Smash Stages, if the sunflower field was from a new stage it would be 3 from games and 3 from stages.
I’ve been feeling we may just get third parties, but the only ones left I care about are Steve and Geno which seem unlikely at this point...but regardless, I’m really hoping this means something and we get Porky. Perhaps he could even be the next character if it does mean something, since the stage would of course already be in development.