IGN talked to Mr. Nintendo himself, Shigeru Miyamoto who told them
What we do get is the Fox and Falco Amiibo's work with the game.
“Unfortunately, we won’t be releasing an Arwing amiibo,” Miyamoto said. “We did have a few prototypes. There was an Arwing amiibo that transforms into the Walker, but we weren’t able to turn that into a product that could meet safety guidelines for children.”
The Fox Amiibo unlocks the Retro Arwings, the whole fox team will pilot them, let's hope the old music gets played when you use your Amiibo.