Got my 2014 Trek Speed Concept 9.9 Shimano 9070 Di2 bike yesterday
http://www.flickr.com/...s/72157635900069236/ The neat thing was hooking it up to the computer and updating the software and making adjustments (see pics for E-tubes software). The front derailleur shifted into the small gear with the up button, so i swapped that around with the software. I also make the rear shifting faster when holding down the shifter button. The disc wheel is super close to the rear derailleur, so that took some time to fine tune. I also adjusted the derailleur hanger as it was a bit off-alignment. The brake pads were a real PITA to change.
Also, i was concerned that my 10 speed quarq SRAM red chain rings would not work with 11 speed Di2. It turned out to not be an issue at all, the front shifting is great.