Better late than never, Google has just posted the latest Android 4.4.4 (KTU84P) factory image for the Nexus 7 LTE. Up until today the best you could get was Android 4.4.3, even though other Nexus devices had 4.4.4 available back in June. If you're not familiar with factory images, they're files provided by Google that can be used to update or completely wipe your device back to a factory state with the latest software.
It's definitely not something that everyone's going to be doing on a regular basis, but if you have a Nexus device it's always great to have the factory image around just in case you need to reset the device quickly. If you need help using the factory image, be sure to see a guide on the subject and head into the forums for more detailed discussion.
Source: Google; Thanks, Chris!