Motor Trend (which is as good as jalopnik) is reporting that the C8Z06 will have 5.5 FP NA V8...interesting...wondering if they are saving the TT V8 for the C8Zr1...
https://www.motortrend.com/news/2022-chevrolet-corvette-z06-engine/
https://www.motortrend.com/news/2022-chevrolet-corvette-z06-engine/