Here is a Google tidbit about the old Together watch face and what 2.0 was supposed to incorporate:
Together was a watch face that allowed two Android Wear users to link their watches together. They could then use their watches to send each other little messages, drawings, or tiny updates regarding whatever activities they were currently performing. Users could also send their friends emoji, stickers, or photos directly from the Together watch face.
Android Wear 2.0 will allow users to send out little notes that you handwrite on the smartwatch itself (and hope that your device can recognize what you're trying to say). You can also swipe through a tiny keyboard to pick letters to form your messages, or select from three pre-written messages if you just need to quickly reply to someone while you're otherwise engaged in something else.
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