Android KitKat isn't just for Nexus 5 owners anymore. Updates for the Nexus 7 and 10 tablets have begun to be pushed out.
Right now, the update is only for Wi-Fi models, but apparently the SIM-equipped versions will follow soon. Here's the official confirmation from the Android Twitter account:
Starting today, Nexus 7 (2012 and 2013) and Nexus 10 will be getting a tasty update to Android 4.4, KitKat
— Android (@Android) November 13, 2013
Check out what KitKat adds in our roundup of its new features, and find out how to add many of its new features on older devices.