It seems users of Xbox One family of consoles will see a new look User interface coming to their consoles. This has been confirmed by none other than Mike Ybarra, the Corporate Vice President – Xbox and Windows Gaming on Twitter.
They’ll be the same, but different from what you see today. 😉
— Mike Ybarra (@XboxQwik) June 15, 2017
In the above tweet, he confirms that Xbox One, Xbox One S and Xbox One X will get new UI which will be different than what it looks like now. The above screenshot taken from the official Fluent Design site of Microsoft gives an idea about how Microsoft will go about changing the Xbox One UI.
Microsoft has already introduced new look for Action Center and Start Screen in Windows 10 Build 16215 based on Fluent Design elements. We can expect similar Fluent Design touches coming to Xbox One too with future preview builds.