Any Nexus or Google Play Edition device owner has seen it at least once. You get an OTA update to a new version of Android, and you notice that it says "Via Wi-Fi only until" and some arbitrary date. There seems to be a lot of confusion with people regarding what this is and more importantly what it is not. We feel like it's time to shed some light.
A lot of times, when there's a new Android OTA update available, this date becomes annoying to people because it means they can't download their OTA over a mobile network.