Okay...it's not new tech.
Now that that's outta the way...the electronic Dura Ace front and rear derailleurs and shifters are going to be available to the masses in 2009. It's been tested for the past 5yrs on the pro circuit and they said it's ready for mass-prod.
-shifting is much quicker / snappier
-more consistant and precise
-automatically slightly overshifts and drops to center for quick changes
-excellent for cable routing
-Rechargeable batteries...just plug into the wall once in a while
-not avail. as a MTB group yet
-RD alone is at least $300
-if you run out of batt. on the trail...you're scrood
I like/don't like it.
We'll see how goes.