Besides releasing the Android 5.0 Lollipop factory images and binaries for the Nexus 5, Nexus 7 and Nexus 10, Google has also started rolling out the Lollipop OTA update for these devices. Android 5.0 Lollipop brings with it a number of new enhancements and features, including Material Design, a new notification sub-system, updated Google Apps with Material Design and more. As it is usually the case with OTA updates, they are being rolled out in a phased manner and can take up to a month to land on your device. If you own a carrier branded Nexus handset, then your update will be delayed further.