Has anyone tried out 'Movies Anywhere' https://moviesanywhere.com/? Seems like a pretty good solution to the digital movie fragmentation issue. Seems to only work with US iTunes accounts currently though so it is preventing me from linking all my accounts. You have to sign up using a VPN, but then you can link google play, US iTunes, VUDU (Link your ultraviolet here) and amazon (US). Not all studios are on board yet and there are some issues when you have multiple versions of a movie, but it seems to give you UHD access as well.