Rayman Legends: Definitive Edition is getting a demo for Nintendo Switch and is currently available for download on the European e-Shop. According to the e-Shop listing, Rayman Legends: Definitive Edition will be available on September 12th, to which is not officially confirmed, however, it could be soon.
The Rayman Legends: Definitive Edition demo will require 707MB of storage.
If you’re not a European e-Shop customer, you can create an account and download it directly from the European e-Shop store by scrolling to coming soon.