PowerPC Macs were able to run the latest MacOS for 4 years, after the announcement, then Apple provided security updates. Your Mac Pro will be a useful device f

PowerPC Macs were able to run the latest MacOS for 4 years, after the announcement, then Apple provided security updates. Your Mac Pro will be a useful device for over a decade, just like my 2009 iMac. And it’s much more likely that Apple extends this period for x86 than shortens it, given they might not be able to support Windows on Apple Silicon. And because they might need more than 2 years to build Apple Silicon Macs with performance as high as the Kac Pro.