I don't know, Majesty. But the devs will probably let us know in the next day or two I would assume. Also, do we need to leave our clans manually or will it do it automatically? If someone is a clan owner, and it automatically makes the person leave their clan and assigns them to a new clan for this war, who gains ownership of their clan, etc? So I'm assuming we might actually have to leave our clans on our own, maybe even have to apply to join new clan and be accepted.... Who knows?
Devs will probably address all this sort of stuff in the next day or two. I'm just guessing, but I feel comfortable with that guess.