Apart for emoji support, watchOS 2.0.1 also adds battery improvements and several much needed bug fixes. Here is a full change log for watchOS 2.0.1:
- Fixes an issue that could cause software updates to stall
- Fixes issues that were impacting battery performance
- Resolves an issue that prevented a managed iPhone from syncing iOS Calendar events to Apple Watch
- Addresses an issue that could prevent location information from properly updating
- Fixes an issue that could cause Digital Touch to send from an email address instead of a phone number
- Addresses an issue that could cause instability when using a Live Photo as a watch face
- Resolves an issue that allows the sensors to stay on indefinitely when using Siri to measure heart rate