The over-the-air patch is apparently rolling out for all Nexus devices, including even the Nexus 7 2012, less than a week after Android 4.4.1 started making the rounds. Depending on your device, the update ranges in size: from 39.3MB all the way up to 54.0MB.
As to what the new update brings, or rather – how is it different than 4.4.1 – we can't be quite sure just yet. There have been some claims made online that the previous iteration had some general issues and that 4.4.2 is supposed to handle those. To that effect, the changelog lists a few minor fixes, such as:
Fix for clearing the VM Indicator
Fix for delivery of the VM Indicator
Various additional software fixes
Security enhancements
That said, it's interesting to note that if you're still stuck on Android 4.4, you'll likely see your droid leap-frog 4.4.1 altogether and get 4.4.2 instead.
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