The latest rumoured to be official Samsung Galaxy S8 cases obtained by AndroidPure confirm that the smartphone will have the fingerprint scanner and a dedicated Bixby button.
What appears in the pictures is a clear cut-out; one for the camera and the other for the fingerprint scanner. A leaked schematics of Samsung Galaxy S8 and S8 plus along with statement from an official Samsung spokesperson revealed that the sensor would sit next to the camera as it makes more sense there for this is where the right index fingers rests.
There is no question for it going on front as it would be majorly occupied by the screen. A cut-out on the right hand side is for Bixby, Samsung own voice assistant in competition to the Google Assistant that will provide relevant textual information. If we look deeper on the sides, they are curvaceous but not more than the latest Samsung Galaxy S7 edge. These leaked images, videos and other pieces of information are finally giving us a fair idea as to how Samsung Galaxy S8 would look like.