It is reported that,Extended support will continue until January 10, 2023.
Currently, in the "Assistive Technology" page,Windows 7 / 8.1 users can still upgrade to Windows 10 free of charge, until January 16th. Taking into account the CPU vulnerability fix Win7 / 8.1 obvious negative optimization, it is recommended that everyone can ascend it.
Finally, incidentally, the extended support for Windows 7 will end on January 14, 2020.
Data show that Windows 8.1 released in October 2013, cut off the boot disk on Win8 has been criticized and return to the desktop form. Comparing Win7, its compatibility is better, boot faster, compared to Win10, there is no variety of automatic updates,Is essentially a generation of classic.
As of December this year, about 10% of users in the Windows system, which is about 100 million.