Yeah, I've seen a few articles talking about that. Some people have started noticing this announcement from MS.
Which, nobody really understands as of now, since MS have claimed that Win 10 would be the last Windows version ever.
Win 10 effectively turned into some kind of rolling release distribution... but. Not exactly.
What's going to be next, who knows. Maybe they're going to change CEOs. Maybe they're going to release a new Windows something. Maybe they're going to drop the Windows brand, and call it something else.
One may even think that in all their pretentious visionary outlook, they are working on making classic "OSs" a thing of the past. Windows 10 is still a classic OS. Possibly by making more and more things offloaded to servers instead of being done locally. (Something we have already discussed before and reckoned it somehow looked like going backwards in time, but with a much more powerful network.)
I for one have managed not to switch to Win 10 as of yet. Still on 7, and increasingly using Linux for some things at the same time. With that announcement, I have even less clue whether I'm ever going to upgrade to Win 10.