We already know the rumor that it's going to break the Veyron Super Sport's terminal velocity, hitting something above 290 miles per hour. Continuing the theme of tweaks that advance the entire package, it's been reported that an analog speedometer will keep track of that vitesse with hash marks running all the way to 500 kilometers per hour, taking the place of the centrally-placed tachometer. Cabin ergonomics should take a step up, while a larger windshield will improve visibility, and the seating position moves outward to become more conventional.
Oh, and since the car is named after French auto racer Louis Chiron and not the mythological Greek centaur, it is pronounced Shir-on, not Kai-ron. You can check out the latest teaser in the video above - at 41 seconds, the spot is about a second less than the time it took the standard Veyron to hit its top speed.