Bad news for those planning to activate Windows 11 with a Windows 7 or 8/8.1 key: users noticed that the latest Windows 11 preview builds no longer allow activation with old license keys.
I was lucky to receive 10 Windows 7 and Visual Studio Ultimate keys for personal use, in the Windows 7 era.
Once the "you can use Windows 7 keys to activate Windows 8/10" thing, combined with Microsoft accounts came around, I created 10 Microsoft accounts with 10 of my email addresses.
I've been able to activate Windows versions 7-11 with all 10 keys (and I can change to older Windows without issue) and been able to upgrade Visual Studio Ultimate to the current version year after year this way.
I wonder if the already upgraded keys attached to Microsoft accounts, that become a bit version fluid, will remain able to use higher versions.
I have some Windows keys back from college (software policy stated you kept your software if you graduate), I hope those continue to work for me as well.