Interestingly, because of the new dub, they’re listing the product as Rio Rainbow Gate: Reshuffle in order to differentiate it from the prior subtitled-only release.
While no date is set for it yet, it’ll be getting a DVD and Blu-ray release in the future as well as streaming on Crunchyroll.
To collect all 13 Gates, Rio must take part in special matches with other Gate Holders; in the Gate Battles, she must gain the others’ Gates to become the most valuable casino dealer in the world.