Yes, but they had lower-end CPUs and GPUs. The Apple Silicon equivalent would be the M1 and if Apple chose to offer it, I could see them meeting an $1800-2000 price point.
But I am more and more of the opinion this will be branded as an "iMac Pro" and just as the "Pro" models of other product lines offer more for a higher price, so will this iMac Pro. And at $2499, it would match the price point of the Intel i7 / AMD 5500XT iMac 5K with 16GB of RAM and 512GB of storage. And Apple could then take the savings from dropping Intel and AMD and use it to cover the higher costs of the ProMotion MiniLED display plus the new case design.
So compared to an iMac (24") with 16GB/512GB, moving up to the base iMac Pro will get you more CPU cores, more GPU cores, better memory performance, better disk performance, a 3" larger display with ProMotion and MiniLED backlighting and four USB4 ports instead of two USB4 and two USB3.
If you don't need all that, then get the iMac and save that money. And now that the iMac is at 4.5K 24" instead of 4K 21.5", you're not really taking that much of a hit in usable display area compared to the 5K 27" iMac Pro.