https://www.techradar.com/news/heres-a-closer-look-at-some-of-the-new-google-assistant-features-in-wear-os

We've gotten a closer look at some of the new features that are now available on the Wear OS platform at Google IO 2018. 

The main feature we saw is, naturally, a much more robust Google Assistant. Now, when you ask a question to the voice assistant on your smartwatch, you'll receive a more thorough answer to your query than you would have in the past.