Windows 10x: Everything You Need To Know

Windows 10X is a new version of Windows that has been built from the ground up for new PCs, and will begin shipping on hardware in 2021. It’s built on top of a new modern version of Windows called ‘Windows Core OS’ that guts legacy components and features in favor of contemporary user experiences and enhanced security.
This means everything from the Windows Shell to the underlying OS has been rebuilt with modern technologies. As a result, Windows 10X does not support legacy Win32 applications at launch. Windows 10X PCs in 2021 will be able to run Microsoft Edge, UWP, and web apps.
Legacy Win32 application support will arrive at a later date, however. When it does, Win32 applications will run in a secure container by default, meaning those legacy applications cannot affect system performance and battery life when closed. Windows 10X is a much more secure and stable OS as a result of this, as there’s no opportunity for legacy apps to cause bitrot.
Windows 10X features a new shell — the user interface — that has been built with modern technologies. It’s an adaptive user experience that can adjust depending on the “posture” of your device. For example, with a foldable PC, the user might want to use it in several different ways; as a laptop, or tablet, or in tent mode for movies. Because of this, the user interface must adapt to provide the best experience no matter which way your device is being used.
This also means that legacy shell elements, such as the Control Panel, File Explorer, and error dialogs and icons are gone on Windows 10X. As Microsoft has rebuilt the entire shell, it doesn’t include any of the legacy things that makes Windows 10 so inconsistent when it comes to UI. The Windows Shell on Windows 10X should be much more consistent. At launch, Windows 10X will only be available on traditional clamshell PCs aimed primarily at the education and enterprise markets. The platform will eventually ship on new device form factors such as foldable PCs, but that won’t be happening in 2021.

                                                                                                                                 Source: Windows Central