While the spotlight may have shifted to Android 4.4.4 for many Nexus devices, the LTE-enabled version of the Nexus 7 now has its Android 4.4.3 factory image file available. The mobile-enabled versions of Nexus tablets often lag a bit behind the Wifi-only models when it comes to updates (for various reasons), so we don't know exactly when the Android 4.4.4 files will be available, but for now it's good to know you're one step closer to being completely up to date.
If you have a need to use the factory image to update or wipe your device, you can grab a download at the link below.
- Nexus 7 LTE Android 4.4.3 (KTU84L) Factory Image download
Source: Google Developers