Apple watchOS 3.0 beta offers a number of new features including improved app performance (faster app launches), a new app launcher, activity sharing, new Breathe app, new watch faces and Face Gallery, scribble feature feature to reply to text messages.
Additionally, watchOS 3.0 beta offers a new "Tap to speak time" feature for both the Mickey and Minnie Mouse watch faces as shown in the video below
Enable this feature by opening the Apple Watch app on an iPhone running iOS 10 beta and enabling "Tap to Speak Time" under "Sounds and Haptics"
"Tap to Speak Time" option in the "Sound & Haptics" settings in the Apple Watch app on iPhone
My next task is to enable the ability to unlock my Apple MacBook running macOS Sierra with my Apple Watch instead of a password.