If you compare both the CARB documents of year 2018 and 2019.The exhaust gas values are the same. So there is no change except color. I feel like that in the US as it is in the 2019 model.
For 2019 model somehow model without ABS only the weight of the bike has decreased by 10 kg, but I think that the value of 2018 probably was wrong . Well, I will tell you that a patent related to CBR 600 RR has been released.
Major change is the frames.The new frame is patented by cross member 40 (made of carbon fiber reinforced resin) to connect with a frame. 19 is an air cleaner .
With this feeling, cross member 40 penetrates the air cleaner.With a rod (cross member) 40 harder than the frame, it feels like try connecting the left and right frames.