These new cassettes are based on a design with one triplet and 8 single sprockets with aluminium spacers and will be compatible with the rest of the range (Med Mech only on the 11-32).
The 11-32 cassette signals the introduction of not only a new, lower gearing cassette, but also a new range of cassettes which are labelled Campagnolo 11 and are available in the following combinations: 

11-25
11-27
11-29
12-27
11-32

Weight: 300g