It looks like Sony SmartWatch 3 owner could make Android wear 2.0 after all not from Sony itself. Developers after PDesire recently released in the XDA Developer Forum, he is now working on an unofficial port and user to this project.
No “ETA”, but PDesire close to wearing 2.0 on running Sony SmartWatch 3. Developer chat seems to think they can make Android work in NFC smartwatch. If you think you can help, you can now join the dev chat.