Today Google is releasing the second (and last) Developer Preview build for Android 7.1. The first one went out last month to the Huawei Nexus 6P, LG Nexus 5X, and the Pixel C. This time around, the HTC Nexus 9 is joining those three devices in receiving the beta software. The factory images are already up for grabs from Google's special website, if you know how to deal with those. If not, the easy way is to join the Android Beta Program and then just wait for an over-the-air update to this preview build. That should arrive within a week. The build number is NPF26F for all devices except...
Source: http://www.gsmarena.com/final_android_71_developer_preview_is_now_going_out_nexus_9_is_getting_it_too-news-21773.php
