https://www.techpowerup.com/241249/m...with-ecosystem

Well, that didn't take long. Microsoft's Windows 10 S push as a "lite, free" version of its Windows 10 OS that would be available for education environments free of charge has been thoroughly abandoned as a standalone product. instead, Microsoft is now looking to integrate it into existing Windows 10 versions (Home and Pro) as a sort of sleeping, to-be-activated "S Mode" which has access to updates, but only has the same features as Windows 10 S currently does - the most important, limiting of which is that the OS only runs UWP (Universal windows Platform) apps. Thus, this mode will basically limit the Operating System to a version which, according to Microsoft, enables better security and a more friendly environment for the typical usage scenarios of such lite operating systems.

Naturally, Microsoft will still offer users the chance to upgrade to full Windows versions within S Mode - at a price. Moving from Windows 10 Home S to regular Windows Home will be free, but Pro S users who want to switch to the full version of Windows 10 Pro will have to pay $49. There will be Pro S commercial versions for Value, Entry, and Small Tablet models, but not Core+ and Workstations. There has been no official word from Microsoft on these software changes, though these will likely take place on the next partner pricing change announcement hailing form the Redmond company.