Windows 10 will reach end of support on October 14, 2025. The current version, 22H2, will be the final version of Windows 10, and all editions will remain in support with monthly security update releases through that date. Existing LTSC releases will continue to receive updates beyond that date based on their specific lifecycles.
Haha I remember having to help a school upgrade to Windows 7. Took a year just to get the approval, then another year to get the budget and keys.