Teaser image 5 was revealed on November 3rd and shows a new translucent blue shifter, complete with the requisite B-Mode, which allows for the driver to choose how much engine braking the car uses as opposed to regenerative and friction braking alone. See here for a much more detailed explanation. Teaser image 6 shows a set of digital gauges that are either mounted in the dash or as part of a heads-up display. We'll know for sure at the Detroit Auto Show in January when the third-gen Prius is officially revealed in all its glory.
[Source: John's Stuff]