The Motorola Nexus 6 and the HTC Nexus 9 were one of the first mobile devices to run Android Lollipop. Today, Google has announced that it has started rolling out Android 5.0 Lollipop update for various previous-generation Nexus devices including the Nexus 4, the Nexus 5, the Nexus 7 (2013), and the Nexus 10. The announcement was conveyed through a tweet from Android's official Twitter account. If you haven't yet received the update, don't fret. It's a phased rollout so it may take a couple of days to hit your device. Be patient!
— Android (@Android) November 12, 2014
Android 5.0 brings major UI design change, along with native support for 64-bit processing, and Project Volta for battery life enhancements. Motorola has already begun soak tests for Android 5.0 on Moto G (2014) and the Moto X. Even LG G3 users in Poland are expected to receive the update as soon as next week.