The developer doesn't mention whether or not this deal is exclusive to those who purchased the Switch version. If you email support@greybox.com with the subject line "RiME Switch Dreadnought Bundle," you'll receive a slew of goodies in the game.
RiME Switch 1.0.2 Patch Notes
Increased visual fidelity, bloom and post-processing
Sharpened image resolution
Opening Cinematics visually improved
Fixed possible stage exploits[...]
