Microsoft announced that the support of the first version of Windows 10, will end on May 9, 2017.
The company originally planned to stop supporting the first official release of Windows 10 on 26 March 2017, but it extended it to May 9.
Windows 10 uses a different support model than older versions of the operating system, such as Windows 7 or Windows 8.
In previous versions of Windows, the end date of support was always the end of operating system life. Running a service pack on an earlier version of Windows, like the latest SP released for Windows 7, signaled the beginning of the system support fee, especially if you chose not to install SP.
Microsoft has changed this particular model with the coming of Windows 10. Windows 10 support is determined by the current version used by businesses. 
Basically, there are three service options that Microsoft currently maintains:
Current Branch (CB) - for all versions of Windows 10.
Current Branch for Business (CBB) - only for professional versions of Windows 10.
Long-Term Support Branch (LTSB) - for long-term support, only for businesses
The main difference between the Current Branch and the Current Branch for Business is that the updates released for Devices with Current Branch are immediately made available to Current Branch for Business with a four-month delay.
The rationale behind this move is to protect businesses from the kind of bugs we usually see with Microsoft updates and essentially make the average Windows user a "beta" tests. "
Naturally no one can talk because the company actually silently distributes Windows 10 for free.
Of course we see a much faster release of Microsoft operating system updates, thanks to the hundreds of thousands who are subscribed to the program Windows Insider, who test the beta builds, and the millions of regular Windows users whose devices get an error reported via telemetry to Microsoft developers.
The big winners are the ones who pay to have a stable OS system, i.e. businesses.
