Google have just announced via their official Android Google+ page that the Nexus 7 (both 2012 and 2013 models) and the Nexus 10 will be receiving the tasty Android 4.4 KitKat update today.
However owners of the 3G models of the Nexus 7 will have to wait a little longer as Google have just said the update for 3G devices will be coming soon.
The new Android 4.4 includes a bunch of useful features but it's mainly a more refined Android experience that is a lot more 'Google'. It features minor UI tweaks, better Google Now integration, faster multi tasking and much more.
So Nexus 7 and Nexus 10 owners, make sure to look out for the new update which should give your device a nice refresh.