Originally Posted by
NoWhammies
The new Di2 levers come with buttons on the top that allow you to change the screens on your Garmin, amongst other things. I've also been told that the new Di2 brake levers are easier to service/bleed.
If your current levers function well for you then you only need to ask how much the extra buttons and easier servicing is worth to you. I wouldn't unless I was getting a new bike.