Apparently they were spotted modelling some new cars. Personally I hope it's PS4-bound.
http://www.gtplanet.net/hyundais-veloster-genesis-coupe-in-next-gran-turismo/
A team of Sony / Polyphony Digital engineers were spotted at a high-end tuning shop south of Los Angeles, capturing exhaust sounds for the Hyundai Veloster Turbo and Genesis Coupe on a dynamometer.
And as makaveli said that they give Kaz time to finish the damn game.