Just considered this. Take a baseline Mac Studio, compare to an equally spec’ed 14" MBP. The Mac Studio needs to have its disk bumped to 1TB to match but then it’s $2199 vs. the MBP’s $3099. So essentially you’re getting the nice Retina 14" display and KB/trackpad for $900.
Or in other words, you pay an extra $700 for the 27" 5K Studio Display. Not too shaby.
On the topic of the loss of the 27" iMac and iMac Pro, it occurred to me that if you’d take the iMac G4’s arm and use it to connect the top of the Mac Studio with the 27" panel of the Studio Display, you’d have a formidable iMac. Including adjustment for tilt, height, and swivel, all without spending an extra $400. 
If you don’t have complaints about your current monitor, and you are not planning to do high end video or photo editing, you are not a very serious gamer, or super audio buff that’s unhappy with the sound system you have, and won’t be using the built in super duper camera very much, than it might be a good idea to save some money and stick with what you have. If you really need some of the new features, then do some comparison shopping before shelling out the big bucks. There could be significantly more affordable and very reliable monitors that will suit your needs. It is a great screen if you need at least some of the new features.
Ars Technica is reporting that Apple has made it official.
Never afraid to kill their darlings…
That support for the ‘Sunflower’ iMac screen is a great example of internal design history in Apple resurfacing time after time. That combo of lift and tilt turning up in the recent monitor stands. The other one was the Cube’s lift-out mechanism turning up in the ‘Trashcan’ Mac Pro.
So how hard would it be for a 3rd party to sell an iMac G4-style arm that can be mounted/fastened to the Mac Studio?
Order the Studio Display with VESA, connect it to that 3rd party arm, and enjoy pure goodness. 
An Amazon search shows that such stands exist, although they are not as good looking as any of Apple’s stands.
I also found that most stands with fully-articulated arms need to be bolted/clamped on to a desk, and most of the free-standing units are a simple pole-mount, providing only minimal adjustments.
But there are some exceptions. For instance, I found this one:
No recommendation here, because all I know about it is a hit from a product search. I have no clue about its quality. But we know that there exists at least one stand that may suffice here.
Sure, that would work.
Personally, I’d still want to be able to fasten/bolt it to a Mac Studio itself. That monitor is heavy (12 lbs even with VESA mount).