Analysis of information sources in references of the Wikipedia article "List of fastest production motorcycles" in English language version.
[T]he R doesn't have an electronic governor to prevent it from exceeding the 186-mph limit agreed upon by the motorcycle manufacturers for more than a decade... This may well be the fastest stock, production model currently made.
Nicky Hayden, who also attended the launch and who presumably gets an even better drive out of T11, tells us the Panigale R continues to accelerate even after the screen goes blank, suggesting that Ducati has opted out of the gentleman's agreement that electronically limits top-speed to 300 km/h, or 186 mph.