https://www.gamespot.com/articles/buying-red-dead-redemption-2-is-complicated/1100-6459391/

Both the Special and Ultimate Editions are up for pre-order digitally on the Xbox Store and Playstation Network. All three physical versions, including the Collector's Box, are available to pre-order on the Rockstar Warehouse. Red Dead Redemption 2 will be out on Xbox One and PS4 October 26.