Amazon is upping the resolution of its streaming service Amazon Instant Video to 4K for Xbox One S owners. The service starts with Amazon Original titles like Bosch, Sneaky Pete, The Grand Tour, and Man in the High Castle.
— Xbox (@Xbox) May 19, 2017
Amazon Instant Video offers Amazon Prime members original content at no additional cost while allowing you to buy movies and TV shows that stream to your TV through numerous connected electronics.
Microsoft was also keen to point out that the Xbox One S is the only console that currently plays Ultra HD Blu-ray movies as well as 4K streaming.