Sony Japan has just posted a teaser about a new concept alpha mirrorless camera that will be officially announced on September 15th, 2020. As we already know, this new camera will be Sony a7C vlogging camera, a camera has similar specs as a7 III, and similar design as a6600.
According to latest rumors, Zeiss is going to announce a new full frame compact camera just before Photokina 2018 in September. This new Zeiss full frame compact camera is rumored to have Sony tech (Sony RX1R II ?). You can see the first teaser above.
According to PhotoRumors, a new teaser talking about that Sony will soon announce a new full frame interchangeable lens camera. This teaser is from Chinese website, and the name of this new camera could be named Sony Alpha a5.