Looks like there might be more trouble ahead for RiME. According to Nintendo.com, the title is now set to ship sometime in Winter 2017. We'll try to get an official statement from Tequila Works on the situation.
UPDATE - Our friends at NWR got a statement from the publisher, Grey Box
"RiME is in active development for Nintendo Switch and does not have an official release date at this time. We are committed to giving fans a high-quality experience and will share more information with the community through our official Twitter and Facebook when it is available."