Then I am not sure you have followed Ducati's historical habits particularly well. Approx every five years when they typically put their current superbike model out to pasture, they have NEVER replaced it with anything remotely similar visually. Variants of a model get tweaked such as the 996 to 998 and the 1098 to 1198 throughout their lifespan. Subtle changes but not new models.
I am sure the R&D department and designers in Bologna have pretty much alrerady nailed or are currently fine tuning the final look of the bike. It takes months to tool up for production of a new model, so it's likely all the injection moulds for the bodywork are or will have been finalised and as mentioned, they won't bear huge similarities to previous models, if history is anything to go by.
If you look retrospectively at previous models such as the Panigale and 1098, final design analysis, clay modelling etc, began almost 18 months BEFORE the bike hit the production line. All you are seeing in these images and speculative articles are test mules, largely for electronics, suspension, handling and engine shake downs. From a colleague who worked at the factory until 2010, typically they may have as many as 10-15 prototype machines in a variety of guises during the testing/destructive testing pre-production phase. That whole process is well under way today.
Some of it will be at the infamously secretive Nardo ring, some will be at Mugello (where the factory are acutely aware of long lens journalists) so further down the time line, expect to see much more representative bodywork on the shots of test bikes but which will be MUCH more heavily disguised. The fact that the spy shots so far have revealed so much of the body and its shape had me discount it immediately. Ducati know all too well how to play the marketing game and would never show their hand at this early stage in the year. It's like burlesque for bikes. Show them a glimpse and they'll crave for more. That's how they play it.
