Back in March Google released the first Android O Developer Preview (AODP). Then last month during the Google IO developer conference, AODP2 got out - and this was the first preview build to also be available through the Android Beta program. Today AODP3 has been released. This comes with the final O APIs, so third party developers can pretty much start working on finalizing their apps for the next iteration of Android. Hundreds of bug fixes and optimizations are included in the latest AODP too. Like previous releases, it can be installed only on the Google Pixel, Pixel XL, Pixel C, LG...
Source: http://www.gsmarena.com/android_o_developer_preview_3_is_out_confirming_this_will_be_version_80_of_the_os-news-25496.php
