A recent video from WindowsCentral's YouTube channel purports to demo the Windows 10X interface. The latest word on this version of the OS is that it will first arrive on devices that are single-screen, touchscreen-oriented or both. Its new leak seems to bear that impression out in detail.
https://www.notebookcheck.net/The-Windows-10X-desktop-leaks-in-a-new-video-demo.515276.0.html