A new rumor originating from Chinese Weibo suggests, that Samsung has unexpectedly stopped development of the dual-cam module for the Galaxy S8 and dropped plans to release the next Galaxy generation with a dual-cam similar to the Apple iPhone 7 Plus. It is not know why Samsung allegedly decided to not go with a dual-cam solution. It is also possible that only the Plus-version of the Galaxy S8 will feature a dual-cam on the back of the phone.
However, a different rumor out of Korea says, that Samsung has decided to improve the performance of the front selfie cam by integrating autofocus instead of using a fixed focus lens like they did in the past. To prevent the lens from becoming too big, Samsung used a new technology known as "encoder method" that uses an actuator at the side of the lens instead of the center. The Galaxy S8 is expected to be released at the end of February 2017 at the Mobile World Congress in Barcelona.