So, a certain youtuber streamed the game and it seems like he broke several embargoes without knowing it.
https://www.youtube.com/watch?v=dt6WXVUim8I (the video will probably get take down by Nintendo so watch it quickly)
He says that the game contains 20 level (more than any Starfox game if I'm not mistaken) but with only 11 planet, because some planet have two different versions (like Corneria 1 and 2 for example). And that's not counting the multiple paths.
There's also an arcade mode, like in Starfox 64, with a game over if you fail. There's a training mode also to let you train in the planets before playing the game. And there's still a hidden that none knows about yet.













