On Nexus 4, system still "up to date" with Kit-Kat
Okay, Android finally updated. It found the update the instant I tried to connect through my phone service, as opposed to connecting via wifi. The strange thing is that I could not in fact connect via the phone. But apparently, turning on the mobile data switch prompted the message that an update to Lollipop was available, even if there was no mobile data to be used there.