Microsoft's Xbox app is undergoing rapid development ahead of its partner handheld "Kennan." This might be an early look at the next big update.

That includes titles on both Steam and Epic Games. Microsoft inadvertently included a mockup of this user interface as part of an official blog post titled GDC 2025: Opening a Billion Doors with Xbox.

Microsoft may have accidentally leaked a mockup of how the Steam UI would look on Xbox. Via the Verge, the image was taken ...