New/revised for 2013:
1. I had first heard of twin spark plugs. Not sure that is confirmed as a change, except that Ducati worked on making the motor more fluid. The latest on this department is that the injectors were repositioned.
2. New computer/software
3. New suspension. First I had heard of active suspension. Now the word is semi-active. It is supposed to adapt to the riding style or conditions of the ride.
4. New ABS, derived from the Panigale's, and allows for the exclusion of ABS intervention on the rear wheel, and variable response according to the selected driving mode.
5. New wind screen. Four attachment points and curved up on the top (as in the picture of the article sited above).
We will know more after the Bilbao's September 23rd date. Or at EICMA.
In summary, changes are evolutionary, and more on the technical side than on the style side of things.