Meh, I think this console generation is actually going to be pretty boring in that respect. Simply put, the concept of "optimization" doesn't really exist in a traditional sense for these consoles anymore. Both Sony and Microsoft have PC versions of their games (and exclusives), they just
target the PS5 or Xbox Series X and edit some ini files before shipping it out. It's not like the PS3, where we have some incredibly esoteric/powerful GPU that took decades to learn, or the N64 where there was an all-new graphics paradigm to learn. Now more than ever, your console is just a less-robust PC: even the Nintendo Switch uses relatively standardized hardware.
I think the real thing to be looking out for is how developers utilize the crazy overhead they have. The Touryst leverages newer consoles to perform 6k/8k supersampled antialiasing without dropping a frame. Minecraft with shaders is finally just... viable. Hell, I wouldn't be surprised of Sony introduced some emulation layer to play PC games (a-la Proton) if their competition with Microsoft really starts heating up. Really, the hardware is the least interesting part of this console generation. Building a robust software experience on them, however, is where things get interesting (at least to me).