After Sony Alpha a9 (Amazon/B&H Photo/Adorama) officially announced, next high-end full frame mirrorless camera will probably a high megapixel camera, and the name will be Sony a7R III or a9R. According to recently rumors on SAR, a7R III or a9R will have a 60-70 MP full frame sensor, the announcement of this camera will be after 3-4 months from now, that means we may see Sony a7R III or a9 later this year.