No, It's just that beginning in 2017, All of the Carrera models (Base, S, and GTS) which previously came with NA motors were upgraded to twin turbos. The 'Turbo' model has always incorporated turbos, but is a different and much more powerful motor. It confuses some people because now even the non-"Turbo" models are actually turbos. I hope that wasn't confusing.
Well heck even the Taycan has a Turbo variant now