The Chorus brakeset has always been their 'basic, high-end' offering. Great function. Long lasting and reasonably priced for Campagnolo. This year the brakes get a few upgrades worthy of note. The most obvious is the color. Out with the polished silver and in with the polished black finish. This is big on the aesthetics, but offers no functional difference.
A big news is what Campy has done to the brake pads and holders. The holders now have a locking clip and slide in and out with ease - this is a huge step forward and long overdue. Anyone who has tried to replace pads prior to this features will remember the wrestling match and frustration associated with changing pads. The brake shoe holder has also been scalloped for weight savings. While the engineers were developing the new pad holder, they took the time to change and enhance the pad compound for better modulation and increased wear time.
Campagnolo offers the Chorus brakesets in two options: Dual pivot calipers for front and rear and Dual Pivot Front for the front and Single Pivot for the rear. In short, the Dual/Dual offers more braking power while the Dual/Single offers weight savings and better modulation. What you see here is the Differential Dual Pivot front/Single Pivot rear option.