Not only would this give a nice boost to the Intel Mac Pro line, it would make up for the fact that they made a modular machine that could be easily upgraded and never bothered releasing a single upgrade for it. And as the article says they are also working on the Apple Silicon version of the MacPro, which will likely be a smaller version of the MacPro, more like a Cube, and it will likely not be upgrade-able, so it would be smart for Apple to release one more upgrade-able machine before they dump the idea of upgrade ability all together.
It seems likely that the Apple Silicon based MacPro will be like every other Apple Silicon with soldered Memory, and fixed gpu on the motherboard, and without the ability to run an external GPU. Now hopefully that also ends up being shown in the price which should be allot less than a fully loaded Intel MacPro, but I doubt it will still be considered inexpensive.