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.
Apparently there is 2 types of Windows licences. The ones that are bound to the hardware and ones that aren't.
If you bought a PC with preinstalled Windows, it's probably the first and you wont get any new keys.
I think you're right that OEM licenses are more strict on certain hardware changes, as in they wouldn't give you a pass on a single mainboard change - but you would still get a key from clearinghouse. As far as I'm aware, all retail and OEM keys are hardware bound. KMS/MAK are not.
Apparently there is 2 types of Windows licences. The ones that are bound to the hardware and ones that aren't. If you bought a PC with preinstalled Windows, it's probably the first and you wont get any new keys.
I think you're right that OEM licenses are more strict on certain hardware changes, as in they wouldn't give you a pass on a single mainboard change - but you would still get a key from clearinghouse. As far as I'm aware, all retail and OEM keys are hardware bound. KMS/MAK are not.