A few days ago, Google rolled out a minor update to Android 5.0.1, fixing some issues that came with the initial Android 5.0 release. The only device of the Nexus family that had not received the latest update so far was the Nexus 7 (2012) Wi-Fi, which was still running Android 5.0 Lollipop.
Now, Google has updated this device, not to the expected 5.0.1 version but to the 5.0.2 (LRX22G). If you have a Nexus 7 (1012) Wi-Fi and you want to install manually the OTA update for the new software version, you can get here the OTA zip file.
With this new version, Google has fixed some specific issues for the Nexus 7 (2012) Wi-Fi edition. However, the company has also addressed other bugs and adjustments that will probably roll out to the other members of the Nexus family.
Most of the improvements are related with the performance of the device, so you can expect the tablet to exhibit a better performance than with the initial Android 5.0.
As usual, you can find the factory images on the Google Developer page. You can also find there the instructions to flash the images if you have never done so.
If you want to have a look at the full list of the changes that come with the new version, the changelog has been posted.