Let’s talk about Android Beta Program
The Android Beta Program gives you an opportunity to try out pre-release versions of Android and Android Wear, and provide feedback. Devices that you opt into the program will receive an over-the-air (OTA) update to the latest beta version of Android O or Android Wear. The updates that you’ll receive as a part of this program are pre-release versions and may contain errors and defects that can affect the normal functioning of your device (see known issues). The feedback you provide on the Beta will help us identify and fix issues, and make the platforms even better.
If you were previously enrolled in the Android N Beta Program, you must enroll again to receive Android O. You may remain in the Android Beta Program beyond the initial O release to preview future Android O maintenance releases (MRs). If you choose to do so, you will automatically get an OTA update to pre-release versions of the MRs as they become available. At the end of the program, you will begin to receive regular public updates.
You may opt-out of the program at any time to return to the stable, public version of Android or Android Wear. Note: If you opt out when your device is running a beta version of Android or Android Wear, all user data on the device will be wiped.
The beta for Android Wear is provided at an early stage of the development cycle. Therefore, we do NOT recommend that consumers enroll in this beta. Moreover, developers should NOT use this beta on their primary Android Wear device.