According to a renowned Samsung tipster the company's upcoming Galaxy Z Flip3 will bring some significant design changes to make it look more futuristic and refined. There are even some renders based on exclusive information gathered by IceUniverse. The images depict a device with thin side bezels that are just 3.8mm wide. The front-facing camera will still sit inside a small cutout, though. The leak also mentions the side frame, which would not "look or feel" like metal but that doesn't mean it won't be metal. It could be down to the finish or some special coating applied. One...
Source: https://www.gsmarena.com/the_galaxy_z_flip3_to_feature_thinner_bezels_and_frame-news-49426.php