Windows 10 S Mode: Microsoft had announced the change of version of Windows 10 S running Windows 10, and apparently kept its promise automatically. S or S Mode essentially limits the use of Win32 software, a system we have known since the beginning of Windows.
The new Windows 10 S mode is expected to be available in most versions of Windows 10, while previously only Pro SKU users could upgrade (?).
Microsoft is preparing a new feature that will allow everyone to "switch to S mode" directly from the "Settings" application. So changing the operation of Windows will be a matter of a few clicks.
This feature was first observed in Windows 10 build 17686, which was released through the program Windows Insider in the Fast and Skip Ahead rings
The new build includes the switch to S mode and will probably be an additional feature that we will see with the upgrade of Redstone 5 which is expected to take place in the fall. The Settings application in the new trial version contains a new option called Switch to S Mode.
It remains to be seen how Windows 10 S Mode will evolve in the upcoming versions of Redstone 5, as the next version continues to grow daily.