Starting today, developers can download a preview of Android Wear 2.0. Set for release in the fall, Wear 2.0 will be the biggest update since the platform launched. Google are finally supporting local apps, which means you can leave your phone at home when you go for a run.
Your health data is tracked locally on the phone and you can even stream Spotify. The watch can connect directly to WiFi networks, which opens up new possibilities.
If you do pair with a phone (Android or iOS), the watch then gains additional functionality, like making calls.
Google Wear will also include Google Assistant functionality with context-aware voice search. Wear 2.0 also lets you combine any watch face with any data you choose. Previously you had to select a watch face you liked, but were limited by the data display the developer chose.