Apple was dreaming of Apple Silicon since Steve Jobs came back to Apple. Heck, many of their products were built as if they were already using their own chip design: Power Mac G4 Cube, original MacBook Air, 2013 Mac Pro.
Can you imagine if the cylinder Mac Pro came out today with Apple Silicon? What a great Mac that would be with the high-end M1 Ultra, 128GB of RAM, and 8TB of storage!
I hope next week we see a totally different Mac Pro designed with Apple Silicon in mind.