Those to think that ARM CPUs can't compete with Intel CPUs need to take a look at the Geekbench scores of the latest iPhones. It outperforms my overclocked i9-9900K in single core. It trails in multi-core performance, but on a laptop or desktop they can easily tack on more cores and increase clock speeds since space and cooling won't be as limited. I think it would be foolish to think that Apple will release ARM based Macs that can't out-bench Intel based ones, including the Mac Pros.
View attachment 477611
What I'd like to know is whether the ARM based Macs will still be using AMD graphics and whether users will still be able to replace graphics cards with off-the-shelf cards in the ARM based Mac Pros when they are released.
Those who believe that macOS will continue to be updated with support for Intel CPUs are lying to themselves. It makes no sense for Apple to continue support and development for two different platforms. I see a gradual wind down of support for Intel. Realistically, I think Intel based Macs and, by extension, hackintoshes will continue to see OS support and updates for 3-5 years. After that, whatever the last version of macOS that has Intel support will continue to get "Security Updates" for a few more years but no more new major releases of macOS and no more Universal 2 or Rosetta 2.
Looking at the comments, I see some have already made the decision to move on to Linux or Windows. To me, this really shows why Apple really left hackintoshing alone and never really actively went out of their way to inhibit it. Many hackintoshers would not have purchased Macs anyway.
Whle I do use Linux and Windows when I must, I can't see myself using either as my daily OS. I have always liked the UI of macOS best. I am most comfortable with macOS. I know macOS far better than any of the alternatives. Personally, I'm looking forward to buying my first ARM based Mac.
Just my two cents and my guesses/estimates...