Google has announced on the official Android Google+ that starting today, the Nexus 7 (both 2012 and 2013) and Nexus 10 will receive an over-the-air update to Android 4.4 KitKat. According to Google, the Nexus 4 and versions of the Nexus 7 with mobile data will be getting the update soon as well.
KitKat was released nearly two weeks ago, and it brought many improvements in security and user-facing features. Google promised that older Nexus devices, unfortunately not including the Galaxy Nexus, would receive an update to Android 4.4 within few weeks. Today’s announcement now reaffirms this. It didn’t take long for developers here on XDA to bake some unofficial ports for these devices. But unfortunately, not everything was perfect in these early builds. Now, however, the unofficial builds will also benefit, as Google will also release the proprietary binaries required to build a fully working system.
We all hoped that it wouldn’t take long for Google to push out the OTA updates for all supported devices. And soon, current Nexus owners will be able to enjoy official KitKat. In the meantime, head over to your device-specific forum and keep an eye out for system dumps and OTAs available to flash._________