I doubt we'll see a PS5 Pro next year, if at all. We've only ever had that in one generation of consoles across the entirety of gaming, and there was a 4K push and a processor that had fallen behind. This generation, we're seeing extended crossgen support, and not a lot of games pushing next-gen visuals yet. I think we'd all feel a little left out to dry if a pro version came out. A slim version seems totally reasonable to me though, especially if rumors are true that Sony wants to switch to a single PS5 model with an optional disc drive attachment.

I wanted a ps5 pretty badly at launch, but everyone knows how difficult it was to actually get one at retail prices. I know they're fairy easy to buying now, but I've waited so long at this point that I may as well wait for a pro version like you mentioned.