Apple discontinues the Mac Pro, and also the $700 optional wheels.

Chance Miller fro 9to5Mac:

It’s the end of an era: Apple has confirmed to 9to5Mac that the Mac Pro is being discontinued. It has been removed from Apple’s website as of Thursday afternoon. The “buy” page on Apple’s website for the Mac Pro now redirects to the Mac’s homepage, where all references have been removed. 

Apple has also confirmed to 9to5Mac that it has no plans to offer future Mac Pro hardware.

The Mac Studio has long been considered the unofficial replacement for the Mac Pro, and now it’s…still not official. It’s as official as saying there will be a new iPhone coming this September.

Juli Clover from MacRumors talking about the wheels:

The ‌Mac Pro‌ Wheels kit was introduced in 2020, and allowed ‌Mac Pro‌ owners to add wheels to their machine after purchase. The ‌Mac Pro‌ could be bought with a wheel option for an additional $400, but the lower price was because opting for wheels removed the $300 feet.

Apple's kit included a 1/4-inch to 4mm hex bit for installing the wheels, and an installation guide.

Apple also sold a $300 ‌Mac Pro‌ Feet Kit for users who ordered wheels but wanted to swap to standard feet. That kit has also been discontinued. The ‌Mac Pro‌ and its accessories have been removed from Apple's website entirely, and old links now redirect to the online Apple Store.

For ‌Mac Pro‌ owners who want to switch to wheels but are now unable to do so, OWC sells a less expensive Rover Pro wheels kit for $200.

You can still buy a refurbished Mac Pro if you are so inclined but if you want the OEM wheels, your only option is eBay. Prices are still decent at around $300.