Polyphony Digital is still producing content for Gran Turismo 6, and this time the developer has decided to place three new Vision GT cars into the game. These vehicles are the LEXUS LF-LC GT, Alpine Vision Gran Turismo and the Alpine Vision Gran Turismo Race Mode. All three cars can either be purchased from the Vision GT area of the Cars menu in My Home, or unlocked by completing a lap in the new seasonal event. The second option is only active for a limited time though.
You may also remember update 1.16 which brought along with it Mid-Field Raceway, though it also introduced a couple of bugs. Update 1.17 fixes the issue of not being able to resume a suspended B-Spec championship race.
Source: PS Blog