I really want to get an S8 if it delivers but a good case is a must for me. My Otterbox has saved my Note 4 multiple times which is the only reason it still lives with no cracks after over 2 years.
Reducing the bezel size on a phone is great in theory put practicality wise, it may be difficult. I'd recommend, upon its release, going to the store and physically seeing what it's like in the hand to better gauge a case/screen protector solution.
I just hope I can use it without accidentally triggering the display. Hoping they work on the software. Because I already have problems with false inputs on my s7e. I shouldn't need a case to solve this problem. But I understand why people want to use cases. I just prefer not to in most instances.