2022 Intel Mac Pro rumor
Yukki_AnS has joined others in leaking some hardware specs intended for an alleged refresh to the-big-cheese-grater-part-deux.
Intel Xeon W-3300 workstation CPUs (LGA4189 Ice Lake-SP)
Up to 38 cores and 76 threads
64 Gen 4 PCIe Lanes
8-channel DDR4-3200 memory
And of course a reasonable inference would be continued support for Thunderbolt and third-party graphic cards.