You're correct that would be the JRM tested GT3 R35 for 2012, not the GT4 version Kaz drove. It is probably a GT Academy car for their upper tier drivers to get experience.
Probably, but I think we can all agree that GT needs to bring in a full blown racing series to the game and support it like CM does with F1, T10 does with ALMS and V8 Supercars, and iracing does with various groups. It's great we have Nascar but there is no dodge and it isn't fully supported with tracks or anything. The rally group wasn't fully supported either and the GT500 is probably the closest to full support. An international series like say the one I posted or WEC would help this game a lot and allow for more equal online racing groups.
Also I wouldn't mind if it came for GT6, because I hope it has better physics that make driving these cars more realistic. We will have to wait and see.
I agree. SuperGT series, including the double file rolling starts was a good feature that was implement well, but it felt a bit too short. There needs to be a larger racing event with endurance added with the racing series. It would be interesting to have team drivers, which can either be A.I or a PSN partner for A-Spec races. I'm sure more racing series will be added in for GT6.