A physical copy of Diablo III: Eternal Collection has been spotted on Game UK store and will be released on 26/06/2018. Xbox One version will have Xbox One X enhance and 4K ultra HD.
https://www.game.co.uk/en/diablo-iii-the-eternal-collection-2382992
https://www.game.co.uk/en/diablo-iii-the-eternal-collection-2382992
https://twitter.com/AAMARMO/status/1003276104961085441