To answer your question, yes it supports English out of the box. I just got the special edition today and initially thought you'd have to manually go into the options to change the language of the voices and text to English. Surprisingly, it recognizes what region your switch is from and changes it for you, voices and all.
I know you can change the text and dialogue to English but do the voices change to English too or is it all in Japanese?
To answer your question, yes it supports English out of the box. I just got the special edition today and initially thought you'd have to manually go into the options to change the language of the voices and text to English. Surprisingly, it recognizes what region your switch is from and changes it for you, voices and all.