Windows 10 S is Microsoft's latest edition of Windows 10, but it's different in one particular way: It's locked to the Windows Store.
Windows 10 S is Microsoft's newest edition of Windows 10, with one specific change over previous, "normal" editions of Windows 10. This new edition of Windows 10 is locked to the Windows Store for all your apps and games, meaning if you want to install apps on Windows 10 S, you can only do so if said apps are available in the Store to begin with.
Full story from the WindowsCentral blog...
Windows 10 S is Microsoft's newest edition of Windows 10, with one specific change over previous, "normal" editions of Windows 10. This new edition of Windows 10 is locked to the Windows Store for all your apps and games, meaning if you want to install apps on Windows 10 S, you can only do so if said apps are available in the Store to begin with.

Full story from the WindowsCentral blog...