The cult indie hit, The Sexy Brutale, will be making its way onto the Switch in Japan. While that isn't exactly a confirmation of a Western release, website Nintendo Everything did come across a PEGI listing for the game. That hasn't been officially announced, but it would seem silly to bring such a decidedly Western themed game to Japan and not overseas.
Nippon Ichi will be publishing the title in Japan for a fall release. If this somehow doesn't end up making it onto US Switch consoles, then just remember that you can easily create a foreign Nintendo account and download games on your own Switch. Hell, this might even have a full localization ready to go!