Until January 14, 2020. Microsoft will continue to create new software and security updates of Windows 7 OS, after which users of this OS should upgrade to Windows 10. This upgrade is not a must for users, but after this date users of Windows 7 will no longer be able to access the latest software and security updates offered by this company.
As a form of prevention and protection against possible misuse of discovered vulnerabilities in operating systems after it’s End of Support date, the National CERT recommends users to upgrade their OS to Windows 10 in a timely manner.
More details on this topic please visit Microsoft link.