it's already here
I have a friend who is no nerd in any way, whose computer came up this morning on Windows 10. "I can't find anything!"
so, if you don't have things off the desktop and findable through standard Windows trickery, either do it or search on "remove gwx.exe" and do the conversion on your own time, after all the shrieks and eeks are over, and the upgrade path is well known. there's a year to update for free.