Google came prepared for I/O 2016 and packed the keynote with a few exciting announcements. Many of these, however, like the new Daydream VR platform in Android left us wondering about availability and support. The same goes for Android Wear 2.0, which was showcased on stage in an impressive presentation of new features, but we never got word on whether and when we will experience it on our smartwatch. In the absence of any official support list, as of yet the only solution is to deduce and hunt around for fragmented information. This is exactly what user konrad-iturbe on Reddit...
Source: http://www.gsmarena.com/android_wear_20_update_here_is_a_handy_list_of_what_we_currently_know-news-18475.php
