If you have a device that has the ability to get Android N Developer’s Preview, then you should check for updates. Google is deploying a small update for those who are registered in the Android Beta program.
However, Google posted this new factory images, so if you do not want to use Android Beta, or you like the ADB, you can also get the first update.
Updating is small and weighs only 27.3 MB. So it is unlikely we will see there are too many changes, and much more likely that it carries the bug fixes or enhances system performance.
In fact, OTA-update screen does not provide any details on what the update includes, so that is largely unknown, the upgrade represents.
Of course, you should check to make sure that you do not disable the ability to receive updates of the system, which is another feature of Android N Developer’s Preview.
Also, you should know that if you originally flashed Android N Developer’s Preview, you can still get the OTA update, simply by logging into the beta program.