Google has started rolling out Android 4.4.4 KitKat update for all the Nexus devices, including Nexus 4, Nexus 5, Nexus 7 and Nexus 10. The new updated is for security fix, so there are you won’t see any changes in the UI.
According to FunkyAndroid, this update fixes recently discovered vulnerability in OpenSSL and fixes some unrelated bugs in logging and security. Google released the Android 4.4.3 update for the Google Play Edition devices soon after the update rolled out for Nexus devices, so the new KitKat update is expected to roll out for GPe devices soon.
The Motorola Moto G reportedly also started receiving the Android 4.4.3 KitKat OS update this month. It is not clear if Motorola that started rolling out the Android 4.4.3 update earlier this month would skip this update to push out the 4.4.4 update.