January 14, 2020 may seem like a long time from now, but it will take much of that time to prepare and migrate your existing Windows 7 systems to Windows 10. The point is to start now with planning and moving forward so that you won’t be caught in 2020 without security updates. Microsoft has laid out their plan for their Windows operating systems lifecycles here: https://support.microsoft.com/en-us/help/13853/windows-lifecycle-fact-sheet and on January 14, 2020 Windows 7 will reach End of Extended Support. When extended support ends, you can no longer count on any security patches or reliability patches.
We frequently recommend adding a subscription of Microsoft Windows to your existing Office 365 subscriptions, which will make it Microsoft 365 Business. When you purchase this type of subscription, you most likely don’t need to purchase new hardware as the Windows 10 license that is included in your subscription should run great on your existing Windows 7 hardware. When you’re ready to begin the discussion about this for your existing Windows 7 systems, please let us know.