OK, so I asked Ducati customer support in Italy to give me an update on the 1199 display issues (fogging and non-functioning left handlebar controls) experienced by a number of 1199 owners. Their over the phone response was that there are no known issues with the display on the 1199, but they would look into it with the "technical department" and call me back.
A day later they had customer services at Ducati UK call me to again confirm that there are no known issues with the 1199 display.
During my conversation with the UK customer services rep I referenced this forum and the many owners who had experienced one or both of the display issues, I also offered to send them images of the faulty display on my bike. Their response was the pictures could be of a bike other than mine and that the dealer needed to see the fogging first hand - which they have already done - go figure?
Ducati UK customer services only seemed interested in whether my dealer was promptly processing another warranty claim for my faulty(?) display.
There can be no doubt that Ducati are aware that a significant number of 1199 owners that have reported issues with the 1199 display via their dealers; they just need to count the number of displays replaced under warranty to see the pattern. So only conclusion I can draw is that customer services have be instructed not to enter into any discussion on the subject or in any way admit a fault.
As they won't discuss the matter directly, I'm going to write to my dealer, copying Ducati customer services, formally highlighting the fault so that I have it documented while my bike is still under warranty.
I'm also not going to accept another replacement display (3rd one) unless it comes with a technical explanation as to what changes have been made to the F revision display to resolve these issues.