If you want to experience 4K with the Xbox One S console, you will need to download an update first in order to do so. It won’t run/recognize 4K content out of the box.
Some people got their Xbox One S console early in Norway and were confused as to why they couldn’t play a 4K Blu-ray of Deadpool. The machine didn’t even have the option to go 4K as the maximum resolution was 1080p.
Microsoft gave the following statement to Stevivor: “A small number of 2TB Xbox One S consoles were prematurely delivered to fans in Norway via a retailer prior to the launch date,” a statement from an Xbox representative reads. “The first Xbox One S consoles available will be the 2TB launch edition on August 2, which upon start-up, will begin downloading the latest Xbox system update that also enables 4K functionality”
If you are getting an Xbox One S console, just remember that you need to download a day-one update to see 4K media. An Xbox One update is rolling out for all console owners right now and should be available by the time it’s August.