https://forums.garmin.com/showthread.php?363017-Firmware-Version-10-0-Now-Available
http://www8.garmin.com/support/download_details.jsp?id=6735
Changes made from version 9.20 to 10.00:
New feature! Added support for LiveTrack Auto Start.
New feature! Added support for GroupTrack.
Added Distance and Time Ahead/Behind as configurable data fields.
Added Bike Lights options to Shimano Di2 remote controls. Now you can control ANT+ Bike Lights remotely with your Shimano Di2 Dura Ace shifters!