Here's the skinny on what's new in this update:
- Moto Body enhanced calorie calculation: Moto Body now takes heart rate into account when calculating calories burned.
- Moto Body heart rate continuous measure: Heart rate measures in Moto Body are now continuously updated, you don't need to tap to re-scan while you are in the app.
- Security updates: Includes the updates of Android monthly security bulletin until May 1st 2016
- Stability Improvements: Includes changes that fix bugs and improve stability.
As far as version numbers are concerned, this update bumps the watches up to software build MWD49B. While the update may take some time to roll out to everyone, you can manually check by heading to your watch's Settings menu.