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Per https://stripe.com/blog/new-currencies, Stripe appears to accept payments in 135 new currencies. Per the article, they charge the client in the selected currency, and converted to the merchants "home" currency.
It looks to me as if these new currencies are passed through in the same way as they currently are, though they may behave differently because of the conversion fee Stripe assesses and because of the conversion to the merchants home/default currency.
See https://support.stripe.com/questions/which-currencies-does-stripe-support for a full list of currencies supported by this announcement.