The machine hasn’t been “discontinued for good”. Apple said they had “no plans to update it” at the current time.
. So there is hope!
For a. 'Mac Pro' I suspect probably not. The plain 'Macbook' name left and then came back, but left again. Apple could have used 'MacBook' for the more affordable model but when with Macbook NEO in part because it was a substantially different system.
If a system came back placed above the Mac Studio it would be a substantially different system than the legay MP from the 20006-2010 era. It would not likely be the same approach ( non modular RAM , intergrated GPU/accelerators , etc) or the old classic price point. The 'Mac Pro' has too much baggage on the name. They should just pick another suffix to do something 'new'.
A Mac Ultra ( since it probably has an Ultra) might be a better name use than the other 'Ultra' suffies that Apple appears to bve slapping on products. Or Max XX. (twenthy or double X ).
The 'Mac Studio' obviously could not work with the 'iMac' name it was replacing for the large screen version. it is about just as large of a 'name gap' disconnect.
If it had 1-2 slots, an Ultra would still not be a "mac pro" in the legacy sense but would get past the donstaint of having one , and only one, internal drive. That was goofy in 2013. Apple as much as admitted openly that it was goofy in April 2017. It is still goofy in 2027 and will still be goofy in 2037.
There is a chance that Apple is going to lean on 3rd party solutions like. Sonnet Techs xMac enclosures. If Apple leasves a gap in product coverage there for a several years there is decent some set of 3rd parties will partially fill the gap. ( "Tower' enclosure instead of xMacs rack orientation, etc. ) . However, Apple could essentially decide to 'Sherlock' at least the xMac Studio by doing something just overlays that space.
Apple doing sever chips and system that are hyperfocused on running Private Cloud Compute OS/enviroment that is not likely to help a 'mac pro' system.
It will be easier to tell if Apple reveals some details about how the M5 Ultra (and M 7 Ultra ) is put together. The M5 pro/max was left a bit opaque by them.