Sony's design philosophy is similar to apple's, getting more with less, and being super-efficient. Fully customized and integrated to give games that polished next gen feel at relatively affordable price.
My thoughts:
CPU/NPU
I don't think Zen 2 CPU is likely (7nm) mixed with RDNA 3.5 (5nm), Zen 4 and Zen 5 is the minimum if they are to incorporate XDNA2. AI is trending and I am sure Cerny will give his own talk on how AI is gonna 'revolutionize gaming blah blah". Sony didn't care too much about CPU's for PS5 and PS4/PS4Pro, as whatever AMD provided didn't require heavy customization fine tailored to graphics, this is just a given from AMD. 4GHz-5Ghz range is the most likely target. Why is keeping the CPU the same such an issue for backwards compatibility? Why is backwards compatibility difficult for Sony?
GPU
The patent that Sony filed will require heavy customization of the GPU as a way to offset Raytracing and have its full-blown effects on graphical enhancements without tanking performance. 4k native/60fps with raytracing as a standard will be a monumental technical achievement. In addition, GPU will most likely target close to 3GHz range and will be RDNA3.5
RAM:
I guess to keep the costs down, they could keep the RAM amount the same but bump up the bandwidth. The actual available RAM for games for current PS5 is 13GB due to the OS footprint. Perhaps they can finally offset the OS footprint to an additional low cost DDR4/5 RAM and make the total RAM available for games to 16GB.
SSD:
No rumors on increase in speed and size of SSD?
Storage Medium:
Besides a digital only console, it will still have Ultra-Blu Ray Disks
Other Upgrades:
Hoping for Wifi7, Latest Bluetooth, Multiple USB 4.0/4.0 Ver2, and upgrade to Tempest Engine
$600-$700 cause its Pro