A few weeks ago, Apple announced that it would be discontinuing the iMac Pro after supplies in its stores run out. Today, the iMac Pro was officially discontinued and is no longer on sale.
The listing for the iMac Pro has been removed, and visiting the link will redirect you back to Mac landing page. Stock in the United States ran out on Friday.
Apple will continue selling the iMac Pro in Apple retail stores until supplies run out, and third-party retailers will likely have stock of some configurations.
It says that the 27-inch iMac is the preferred option amongst professionals, and can be configured with a 10-core Intel i9 10th-generation processor, up to 128GB RAM and up to 8TB SSD storage.