Catch here being most devices and content are not the S8 ratio, nor will it be for the life of this device. Even if the content fit it is cropped on the corners due to the corner curves that make no functional sense.Not to long ago 4x3 was a standard and people thought 16x9 was crazy. Things change. And 16x9 isn't the future.
Cropped content or smaller due to side black bars are the options here. Hopefully the Note 8 is current Note ratio. I expect it will be, since most professionals will not like the smaller width portrait display space.