First in line is Asus Nexus 7 (2013) which is now receiving Andoid 4.4.3 build KTU84L. This update is just a bit shy of 74MB, so have that in mind. Other Nexus devices should follow in the coming days. Have in mind though that not everyone will get the update in the coming days, this rollout (like usual) will come in waves to owner of certain Nexus devices and it might take a while ’till it reaches your device. The update itself brings a lot of bug fixes and a refreshed Phone app.
Android 4.4.3 factory images are also available for certain Nexus devices, you can get them here.
VIA: Android Central