Why do you guys think there has to be a key cylinder in the decklid?
The only reason the Corvette has a key cylinder is because of the electric door latches. If the battery fails, you have to have a way to get in the car. On the Corvette and XLR that was a key cyclinder above the plate. Once the decklid is opened a mechanical cable can be pulled to open front side doors. I know this because my guys released those parts.
On most cars today, there are no key cylinders in the trunk. They are either electric unlatching or simply opened with the key fob and a button inside the car.
Not saying there will or won't be, just that there doesn't have to be.