https://arstechnica.com/gadgets/2023/02/apple-could-skip-an-m2-mac-studio-update-to-boost-apple-silicon-mac-pro/

If rumors are to be believed, Apple has had to scale back its ambitions for the Apple Silicon Mac Pro. A planned performance-boosting "M2 Extreme" chip has allegedly been canceled, and some of the perks people normally associate with the Mac Pro—upgradeable RAM and graphics—likely won't be supported because of the way Apple Silicon chips are designed.

Which leaves us with, if the most recent rumors are accurate, a high-end Mac Studio with user-accessible storage slots stuffed into the current neo-cheese-grater Mac Pro tower design.