That's handy to know, thank you.
Looking at this popup control though, the only indication that, for example, wifi is merely no longer connected versus turned off is the text under the icon, which, had I not been aware of this issue, I would probably not have bothered to read.
However, even reading the text under the button, "Not Connected" is ambiguous given the previous behavior of the button. In other words, without additional context, "Not Connected" probably means "Turned Off" to the majority of users. It's only when you get pedantic about things that it becomes clear that tapping the wifi icon in the Control Center in iOS 11 and seeing the text "Not Connected" means my wifi is still on and that I'm just no longer connected to a wifi network.
^^ Furthermore, I'd be 100% OK with this change if I'd at least been made aware of it. However, the more I think about the way this was handled by Apple, the more it really just seems like UX arrogance: Someone decided that my phone's Bluetooth and wifi should always be on, and they changed existing functionality accordingly and with no indication to me as the user that things are different now.
Not sure how else this can be taken??