Well they released pictures
Well they released pictures of the new Stingray convertible, and it looks just about like your picture above. The only visible differences are that there is glass between the two rollover pods, and there is no glass trunk to see the engine. It was shown that the Targa top locks into the empty rear trunk in the regular Stingray. My guess for the convertible model is that the rear deck lid tilts back and open, and the top section folds down to sit above the engine under the deck lid. I'm not sure if that is true, or if there is some other design, and I do not know if the top mechanism is manual or automatic. Manual would save weight, but it is probably automatic because it looks cooler, and better justifies the price and upscale nature of the Corvette. Regarding price, the C7 price difference was $4500 more for the convertible but it was a full convertible, whereas the new Stingray convertible doesn't look much different than the standard targa top version when open. Still, in most modern mid-engined European exotics there usually is a big premium to be paid for an open top version, if only for status sake. For 2018 Corvettes, about 7.6% of the regular Corvette buyers bought the C7 model in convertible form, and for the Grand Sport and Z06 models the take rate was around 5%. We will have to see what the final price is when the convertible is formally shown. I love convertibles, but considering that you get 90% of the experience and look of the convertible version with the standard targa top for free, we will have to see how well the new convertible model sells.