from this article here.
Additionally, players will be able to expand their roster and play through the new Crimson Moon content with five new pilots, three new starships and eleven new weapons available separately for digital-only purchase.
Alongside the Crimson Moon update, prepare to take control of the Star Fox team members Peppy, Falco and Slippy in brand-new content coming exclusively to Nintendo Switch. Hunt down the Star Wolf team in a series of missions with the help of three new Star Fox team pilots, each with their own unique special ability and skill tree. The new Star Fox content will be available separately for digital-only purchase for $11.99 on Nintendo Switch beginning April 30, 2019.