Only in regards to the front shifting and the Yaw derailleur. The rear is still the 1:1 cable pull as evidenced by the RD being compatible with the other groups. Also the statement that the cranks are only compatible with the new shifters and FD is pure crap. The spacing is identical to the 2011 stuff, there is no reason it won't work with the older groups. The reason the FD MAY not work with the older shifters is cable pull ratio. I have the older shifters and have the FD on order...I have read several places that it actually works just fine.