I don't know. Personally, I'm going to maintain my skepticism, but I've noticed that my smartphone has slowly been replacing a lot of things that I didn't think I'd give up.
I never thought I'd really use the camera on a phone nevermind how common they were. I have a nice DSLR at home afterall. But then it got to where whenever I want to take pictures my phone is in my pocket and my DSLR is . . . at home.
Like most people it's replaced my watch and alarm clock, and actually as a person who does a decent amount of hunting I've even taken to using the flashlight feature rather than carrying a separate flashlight.
I used to have a standalone GPS and never thought I'd use my phone, but with it having essentially free map updates I always use the phone navigation now. My car audio system has basically just become a bluetooth output device for the phone.
One thing that does seem strange to note is that my smartphone has completely replaced . . . my tablet. My smartphone (a Galaxy S7) feels as fast as or faster than just about any tablet, and the screen size on smartphones has crept up to the point where a tablet use is pointless for me.
Now, admittedly I still keep a laptop and a desktop separate. I do most of my home computing on my desktop and only use the laptop for travel. I would say that I'd never replace them, but the simple reality is that it's VERY convenient to always have your primary device in your pocket. It probably won't be the Galaxy S8, but I can very well envision an EVENTUAL future in 5-7 years where my main "computer" is just my smartphone plugged into a docking station so that I use it with a large monitor, keyboard, and mouse. The only thing I'd be leery of is gaming but Nintendo is already basing it's next console on mobile tech. Depending on how much technology progresses if they just have a bluetooth gamepad to go with that large monitor that might do just fine for my gaming needs too.