They’ve been doing just that with the Porsche GT3 R, Hyundai TCR, 296 GT3, Mazda Spirit Roadster 12R(derived from the Super Taikyu car), Lancia Integrale Rally car, F3500 B, F3500 A, W 196 R, Impreza Rally Car, JGTC NSX, GT-One and a host of others. Cool thing is race cars added haven’t been far between updates. Especially given how hard it is to get licencing for certain cars.
If the “Camaro” isn’t a race car trimmed model, PD probably aren’t done adding race car oriented things. We did get the Aston Martin with GT4 aero parts. At least that’s a bit of a nod if they weren’t able to get the licence for the actual Vantage GT4.