Though released already for the Japanese Nintendo Switch eShop, CIRCLE Entertainment has reassured fans in the West that they will not have to wait long for it as well. According to a tweet from CIRCLE Entertainment, the rhythm game is slated to arrive in the West next week on 28 September 2017.
— CIRCLE Ent. (@CIRCLE_Ent) September 20, 2017
Furthermore, they have also confirmed that controller mode and DLC will be coming to the game in a later update.