Wasn't windows 10 supposed to be the "last windows ever" ?
Have been hearing about the subscription windows for 20+ years and it hasn't happened yet.
From their perspective, the latest Windows 11 update is just Windows 10.0.22621.2361!
But also, internal interfaces and external interfaces are rev'd so teams tend to talk about the different interfaces they work with (ie. dxgi 1.2, dx12_3, wddm 3.2, UMDF 2.1) or the different internal versions of apisets.
Microsoft has never said that.
Edit: since people are still confused.
1. What was said was "...and because Windows 10 is the last version of Windows, we’re all still working on Windows 10". This was said by a Microsoft developer evangelist, never it was an official corporate position or an announcement. And most certainly no one said "ever".
2. You could argue "the last version" meant "the most recent".
3. When Microsoft has been reached for a comment, they produced a usual corporate speech about how Windows 10 is going to be "reflective of the way Windows will be delivered as a service" (whatever this means) but they never confirmed there won't be the next version.
And to an extent the basic idea they did agree to has been true. 11 was a free upgrade for machines that were eligible to run it. I didn't need to go out and purchase a new Windows version.