I have not heard about any changes to the cast. I am assuming that Grace Park's Kono somehow gets rescued in the S3 debut. I'm hoping anyway. I was miffed when she was pushed back by another female character who was there for a while just to potentially give Steve some love interest. Fortunately, they went bye bye and Park seemed to have her role back at full status. I like her and will be super miffed if she does not return.