In a word: Yes.
With some trepidation I clicked on the "Update Now" button and let Microsoft have its way with my precious computer. The results were anti-climactic.
Because I had painstakingly parameterized my 8.1 install to mimic Vista as much as possible, the Windows 10 installation maintained those settings, and frankly the only obvious difference I can find between my 8.1 and my 10 interface is that the icons in the System Tray are smaller.
Oh, it's nice not having my windows go full-screen whenever I inadvertently allow the mouse cursor to touch the top of the screen, and the nonsense that happened in 8.1 whenever I let the cursor wander over to the far right is now gone.
I guess there were enough complaints about 8.1 that even Microsoft came to the conclusion that not
everybody wanted a tablet interface, and that some of us Luddites were still computing on a desktop system.
tanstaafl.