Latest reports from Google, confirming that the first Android 5.0 Lollipop over-the-air updates is coming to Nexus 7 (2012), Nexus 7 (2013 Wi-Fi) and Nexus 10 devices only, and it will start rolling-out on November,3rd.

The Rest of the devices Nexus 4, Nexus 5, Nexus 7 (2013 LTE) will get the same Lollipop OTA update later on November as well, but because radio and carriers variants takes more time on testing than the regular Wi-Fi only devices.
In both cases all the Nexus family will get the Android 5.0 during November starting with the Wi-Fi only tablets on the third day of the month. Check out what’s New on Android 5.0 Lollipop!