Yesterday, I got the notice. To upgrade my Nexus 7 tablet to Android 5.0.2. The update package is 9.8MB. Very small.
Restart and install the upgrade is fast. But the process to optimize the Apps installed is about 5 minutes.
My device is LRX22G, Lollipop looks like below:
The EasterEgg of Lollipop is a Android Robot style Flappy Bird.
I have never passed even one.