A new version of Windows 10 Pro will be introduced around 2019 called Windows 10 S:
Introducing Windows 10 S
Reference: Introducing Windows 10 S – Streamlined for Security & Superior PerformanceStreamlined for security and superior performance.
What is Windows 10 S?
Windows 10 S is a specific configuration of Windows 10 Pro that offers a familiar, productive Windows experience that’s streamlined for security and performance. By exclusively using apps in the Microsoft Store and ensuring that you browse safely with Microsoft Edge, Windows 10 S keeps you running fast and secure day in and day out.
For more information, please refer to this page.
READ THE FAQ
Your applications are delivered via the Microsoft Store ensuring Microsoft-verified security and integrity. Microsoft Edge is your default browser since it’s more secure than Chrome or Firefox.1Windows Defender Antivirus and all ongoing security features of Windows 10 are included.
Performance that lasts
Designed for superior performance that lasts, start-ups are quick and built to stay that way. With Microsoft Edge your online experience runs fast and safe. Stream HD video, switch across apps and stay productive on the go.12345
Familiar Windows 10 features, on a range of modern devices
Enjoy multi-tasking with snap, task view and virtual desktops. Get the suite of built-in apps and newest innovations like Cortana, Windows Ink and Windows Hello for password-free sign-on.6 Choose from a range of exciting modern devices coming soon.
Cloud convenience plus the power of apps
Windows 10 S integrates with OneDrive so files are saved to the cloud, in sync and accessible from your devices. Use compatible apps available from the Microsoft Store. If you need to use professional tools or would rather run non-Store apps, you can easily and affordably switch to Windows 10 Pro.7
There’s a Windows 10 for everyone
Windows 10 Home
Windows 10 Home includes the familiar features of Windows 10 with support for non-Microsoft Store apps.
Windows 10 S
Windows 10 S is streamlined for security and performance, and works exclusively with apps from the Microsoft Store.
Windows 10 Pro
Windows 10 Pro includes all the features of Windows 10 to support professionals, including non-Microsoft Store apps, domain join, remote desktop and BitLocker.
Introducing Surface Laptop
Whether Microsoft will offer Windows 10 S by default is not clear. One report by Thurrott.com has said that users will be able to upgrade from an 'S' version of Windows 10 Home S to full-fledged Windows 10 Home for free, but Pro users going from the 'S' version to the full version will be charged $49.
What this means for you: While it’s not clear why the Windows 10 S transition will take place in 2019—development time, or just a chance for the Windows 10 S to succeed on its own?—we do know now that Windows 10 S will be the “low-hassle” version of Windows. Windows 10 Home/Pro, with its legacy Win32 support, will be the more powerful version. Guess we’ll know in a year how this will change the status of Windows 10 S in the marketplace.