#SmashBrosUltimate - Smash Bros for Switch.

[Kriven]

I'm fairly confident that Nintendo has copies of any official artwork they've produced over the years. It wouldn't surprise me if it's somebody's job over there to go through the old concept art and drawn cels produced by people like Miyamoto and scan it in at some ungodly DPI specifically for when they produce promotional material like Hyrule Hystoria.