And for a longer time still, but you paid for the LTS license already to have longer support.
I think it’s worth to point out some details in this context because it’s pretty interesting, but LTS Windows is more of a business/volume licensing thing, so many users are unaware this even exists:
Windows 10 IoT Enterprise LTSC 2021 is planned to get security updates until January 13, 2032.
(As an Internet of Things Windows, it’s not licensed for an allround home or business computer, but apart from that it’s a normal Windows 10 without the Microsoft Store, so it will install and run just fine, that is if you want to bet on nobody ever checking whether you really run an IoT appliance or a kiosk display with it. Genuine, valid licenses are costly, though.)
Windows 10 IoT Enterprise LTSC 2019 is planned to get security updates until January 9, 2029.
(The same IoT licensing constraints apply.)
Windows 10 Enterprise LTSC 2019 is planned to get security updates until January 9, 2029.
(A normal Windows 10 Enterprise stuck on the 2019 feature set, but with longer security update support.)
Windows 10 Enterprise LTSC 2021 is planned to get security updates until January 12, 2027.
(Seems contradictory, but Microsoft switched to a shorter life cycle here, so the 2021 version indeed has a shorter support timeframe than the 2019 version.)
So the sweet spot for businesses or home enthusiasts hell-bent on running a correctly licensed Windows 10 for years to come will be Windows 10 Enterprise LTSC 2019.
Anyway, we’ll still see Windows 10 in use for years, and if correctly licensed there will be no reason to freak out because it’s Windows 10, the optional reason to freak out will still be because it’s Windows.
Regarding paying for one year of security updates extra … Microsoft introduced options to get the extra year for free (at least in the EU). You “just” need a Microsoft account, but you need that anyway even if you want to pay (to continue to login with a local user account without remembering to login with a Microsoft account every 60 days at least) because the payment is done via a Microsoft account, and you (or family/acquaintance/whoever manages your Windows computer) should have a Microsoft account already when using halfway current Microsoft Office products such as Outlook (← cunning topic title reference) because you need a Microsoft account to license/install a locally run version, or you are using Microsoft’s 365 cloud offerings.
Once you register for the Windows 10 ESU (Extended Security Updates) program, the registration is valid for up to 10 computers (!).
https://www.microsoft.com/windows/extended-security-updates
As for Windows in general, the best time to switch to Linux is always now, unless you are running obscure, Windows-only hardware or software, or you are a business and have workflows hopelessly trapped in the Microsoft universe.
Or you know all that, and you are just lazy, like me.
(To be fair, I wasn’t lazy when Windows 7 ended, but I had a TV card which I couldn’t get to run on several Linux distributions with hours and hours of testing and tinkering … and now I don’t use the card anymore, but now I’m consciously lazy
. But the switch will come somewhen, I guess.)