I'm personally in the camp that the current model will be phased out and that the "Pro" version will just be a modest upgrade that will replace it. More storage, screen bezel reduced, better battery life, maybe 1080p option for handheld.
At any rate, I'm guessing you're in wait and see mode for now. Hopefully we'll get info soon.
This is what I'm hoping for.
Planning to buy a Switch myself this holiday season when Pokemon Sword comes out.