Apple has released watchOS 3.1. According to Apple, it provides:
° A new option to replay bubble and full screen effects in Messages;
° Messages effects can play with Reduce Motion enabled;
° Fixes an issue that could cause the notification for Timer complete to be delivered twice;
° Resolves an issue that could prevent Apple Watch Series 2 from charging;
° Resolves an issue where Activity rings may disappear from the watch face;
° Fixes an issue that prevented Force Touch options from appearing in some third-party apps.
You can update your Apple Watch to watchOS 3.1 via the Apple Watch app on your iPhone.