ICYMI: Mainstream Support for Windows 8.1 Has Ended (https://www.groovypost.com/news/mainstream-support-for-windows-8-1-has-ended/) -- and I did miss it. As shown in the article, Extended Support ends January 10, 2023, so another five years of security updates ahead.
Wow. I missed it too. I guess because W8.x is in the category of Windows Me and Vista. Most users either skipped it, or quickly upgraded away from it.
Thanks for the elbow in the ribs, Corrine. ;)