This is not a drill! The official Android 5.0 Lollipop factory images are now available for the Nexus 4, Nexus 5, Nexus 7 (2012 & 2013 WiFi models), and Nexus 10. This means if you own these devices you can manually flash these images instead of waiting for the OTA update.
Google has a quick start guide to help you get acquainted with Lollipop. You might need it because there are tons of changes from KitKat to Lollipop. Check out this lengthy changelong. Let us know if you’re going to flash these images or wait for the OTA. Now if you’ll excuse me, I have some flashing to do.