Sort of. Apparently, Microsoft will kill off IE in Feb 2023 in Windows 10. The lifecycle page notes that IE will be permanently disabled with an Edge update. For earlier OSes, it isn't quite clear what will happen. However, extended support ends this month, Jan 2023, for Windows 7 and 8.

Does anyone use Windows 8?

I have used IE many times in my career, but the last decade of so I've shuddered every time I need to run it on a server or remote machine. It's ancient technology that feels cumbersome, much like trying to get something done on a Palm Pilot instead of a modern smartphone.

I know there are lots of websites and apps that use technology that works in IE, and Microsoft is adding an IE Mode to Edge for those cases.  Microsoft has a "what you need to know" article you can read, but it seems more like an advertisement for Edge than an informative article.

I could care less about IE, and I mostly don't think I've needed it in years, but I do encounter that technology in a few places. Outlook is the main one where some sort of IE-based control is still being loaded for some authentication mechanisms. I think removing IE is one thing, but getting rid of embedded controls based on IE is going to be a much harder and longer-term issue.

I know so many developers that used various versions of the browser control in their apps, and I suspect there is no shortage of places that IE tech will continue to be a problem. I'm sure it works most of the time, but probably not always.

Hopefully, most of you out there use a modern browser for your work, and if you need one inside an application, you use something besides an embedded IE-era control. If you need an alternative, there's an older Stack answer that might help. Please, use anything by an IE control. It's time we let that technology retire gracefully in a museum somewhere.