If you prefer to stay with 7 or 8.1

[plodr]

Dec. 1st and 2nd two updates are offered KB3112336 (8/8.1) KB3112343 (7)
that have something to do with Win 10.
One source of information: http://www.infoworld.com/article/3011040/microsoft-windows/windows-update-patches-kb-3112336-and-kb-3112343-are-all-about-windows-10.html

On all four 7 computers 3112343 was in optional. But MS has in the past started an update in optional then after a period of time moved it to Important/Recommended.

I've chosen to hide this optional update because I plan to stick with Win 7 on our four computers.

[Digerati]

FTR, W7 was, by far, my favorite Windows version. I didn't even try Vista. Windows 8.x was okay, but only after installing Start8 to make it look, feel and behave like Windows 7. But I have since upgraded all the computers here to Windows 10 and I have no regrets. On my two main computers, I am running Start10, but frankly, I have no problems going back and forth between this computer with Start10 and my other computers with the default Windows 10 start menu.

If me, and I was certain there were W10 drivers available, I would not hesitate recommending you give W10 a go.

[Corrine]

Just spotted an article about those two KB articles:  Microsoft makes upgrading to Windows 10 'a smoother experience'