microsoft are trying to get win10 refuseniks to panic at the "loss" of their free "upgrade" option and voluntarily upgrade while they still have the chance.
In a few weeks, they'll "have a change of heart" and decide to continue offering it for free after all, and continue with their increasingly aggressive attempts to force people to install their spyware whether they want it or not.
expect them to go way beyond just trying to sneak win10 in to unrelated updates, if they haven't already, they'll soon start issuing win7 updates that introduce subtle instabilties. of course, this will partially flop because it'll be hard to distinguish from normal operation.
disclaimer: i use win7 solely for gaming and nothing else (and i don't allow my banking or credit card details to go anywhere near windows* - all steam etc purchases are done from my linux macine). There are some features from win10 that I wouldn't mind having, but not at the price of advertising, spyware, and other malware built in to the OS, and the inability to disable useless features like cortana (which is partly spyware and partly useless-i-have-no-fucking-need-or-desire-for-voice-control), or the inevitable transition to a walled-garden app-store (with other vendors increasingly locked out).
steam on linux is becoming an increasingly viable alternative to win7. by the time win7 is completely unusable, there's a reasonable chance I can convert my gaming machine to steam on linux (or steam on linux plus wine - i used to use wine exclusively for games until i built a win7 gaming box, most games worked fine).
* or android, either. there's no way i'm trusting either google or an insecure and easily lost or stolen device like my phone or tablet with my credit card, financial or other private/confidential information. I'm not missing anything, ignoring the uninstallable google apps, almost every android app i use is GPL or MIT/BSD or other free software anyway.....and 90% of everything is crap. In the case of app stores, it's 99.999999%.