When Apple has decided to remove the headphone jack from iPhone 7, the company has been strongly criticized for it, also by its rivals, including Samsung. Now Samsung is opting for the same move - Galaxy S8 will feature a USB Type-C, and if you want to plug in your headphones during charging, you will be obligated to use specific adapter. Samsung explains the decision by reducing of phone's size, which allows for applying a larger battery to it.
In addition, on the Internet we can find information that Samsung decided to remove a physical home button. It probably will be replaced by a fingerprint reader, but this information is not confirmed.