iMac Pro is 'currently unavailable' from Apple in the US, Canada [u]
The iMac Pro is currently listed as unavailable on the Apple Online Store in the U.S. and Canada, suggesting that supplies of the machine are running dry.

Credit: Apple
This comes just a couple of days after Apple announced that it had discontinued the iMac Pro. Apple said that the model would only be available in a single configuration "while supplies last."
In the U.S. and Canada, the iMac Pro is listed as "currently unavailable." In other regions, such as Europe and Asia-Pacific, it's still available with shipping estimates between two to three weeks.
It's possible that remaining iMac Pro models will come back in stock, though because the device has been discontinued, users who are interested in buying one should do so sooner than later.
The iMac Pro debuted in 2017 and has not received any refreshes since then. In its place are machines like the 27-inch iMac and the 2019 Mac Pro.
Apple is rumored to be working on a redesigned iMac with slimmer bezels and an overall form factor akin to the Pro Display XDR. It isn't clear if Apple is going to refresh the iMac Pro specifically alongside other models.
Update: Authorized resellers including Amazon have also run out of stock.
Update 6:44 p.m. EST: Apple is showing limited stock in the U.S.

Credit: Apple
This comes just a couple of days after Apple announced that it had discontinued the iMac Pro. Apple said that the model would only be available in a single configuration "while supplies last."
In the U.S. and Canada, the iMac Pro is listed as "currently unavailable." In other regions, such as Europe and Asia-Pacific, it's still available with shipping estimates between two to three weeks.
It's possible that remaining iMac Pro models will come back in stock, though because the device has been discontinued, users who are interested in buying one should do so sooner than later.
The iMac Pro debuted in 2017 and has not received any refreshes since then. In its place are machines like the 27-inch iMac and the 2019 Mac Pro.
Apple is rumored to be working on a redesigned iMac with slimmer bezels and an overall form factor akin to the Pro Display XDR. It isn't clear if Apple is going to refresh the iMac Pro specifically alongside other models.
Update: Authorized resellers including Amazon have also run out of stock.
Update 6:44 p.m. EST: Apple is showing limited stock in the U.S.
Comments
1) hefty cpuGPU core counts with architecture improvements.
personally, I’d rather not have a touch screen - a touch screen on an iMac isn’t really convenient and just leaves fingerprints all over the beautiful screen.
The 27" iMac has upgradable RAM, and I hope the new iMacs keep this feature.
HD/SSD upgrade without having to remove the screen would be nice too...
If, for whatever reason, the SSD ends up being soldered in, I like your idea of having a place to add a 2nd SSD. Perhaps a removable panel to provide access to an area that would allow attaching a Thunderbolt drive inside. Or, given that SDUC-I Express cards can have SSD speed and capacity, maybe two SD slots--one external and one internal (you wouldn't want to inadvertently eject an SD card being used as an SSD). Frankly, I doubt either of these would happen, but we can dream, can't we?
I can understand Apple's desire to solder the chips for the boot drive: to increase system security.
These systems have custom motherboards and aren't subject to the conventions/restrictions placed on industry standard designs such as ATX, micro-ATX, mini-ITX, whatever. Apple has lots of flexibility to put the RAM slots and second m.2 slot in a location more accessible to the owner.
Mac mini
iMac 24
iMac 27 or 30
xMac / better name req’d
Mac Pro
27 or 30” 5k display (matches form / size of new iMac 27 or 30) in Space Gray to work with and stylishly blend with all of the above (less so iMac 24 / especially if they’re avail in colors)
If I were one of the 17 people who bought one I'd be worried about support.
With control over the whole HW & OS stacks they should integrate them before politicians, peddling choice as liberty, decide otherwise.
With drastically reduced thermals they could create a series of enclosures/hubs (24/32” displays, 14/16”notebooks, nano/mini/max desktops) in multiple colours with Apple Silicon modules (actively cooled thin & passively cooled ultra thin) for Mac/TV/graphics/neural/networking & storage functions.
The enclosures could be purchased outright with the Silicon-as-a-service providing an upgradable computing path.
Yep, the trend is definitely away from internal expansion. I get it. There are actually some good reasons for this. Manufacturing processes are simplified and reliability increases (so less warranty claims).
I wonder if "regular" people outside of these tech forums notice the higher cost of RAM (and SSD) beyond base level in Macs. If it is relatively common knowledge, it may be a marketing liability -- I mean sales are obviously quite good the way things are, but seems like more people would splurge on the next level up on RAM or SSD if pricing were more aligned with standalone retail pricing of those components. I personally would care a lot less about expansion/upgrade if initial higher RAM/SSD configurations were more affordable. I still think there is a case to be made for "upgradability" if it makes repairs less expensive too. Also, environmental impact is less if people are able to hang on to their devices longer or if repair does not need to require entire main systems board replacement.