There are other buildings/structures on the official map, so they might represent villages or something, too (ex: there’s a spot in the top left snowy area that looks like some sort of village). It’s unlikely that there will be no other villages whatsoever. It’s possible, yeah, but in an open world game like this, it would seem really weird/kind of empty if they didn’t include more village areas.
I do think there’s villages (or something like them) around the places the little red/white tag things are in on the official map. There’s one above Jublife, the snowy structures, at the base of a mountain by a river (that looks like a fishing village or something… or I guess it could just be rocks), another by the base of the mountain to the right, and two more to the far right (though I don’t see anything there like villages). I could see there being one village per region of the continent, if they’re dividing it up like those tags.
I could be wrong, though. I’d be bummed if there really is only one village.