Crunchyroll streams the series in the USA, Canada, South Africa, Australia, New Zealand, and Latin America.
The distributor has now set a release date of Juny 6th, 2018 for the 10th volume of the Whole Cake Island Arc portion of the show on Blu-ray which is set to cover episodes 819 through 822 when it arrives.
The One Piece train continues on as Avex Pictures handles the Japanese home video release for the series.