The larger iMac is gone from Apple website. So for now there will be no larger iMac. If there will ever be one it will take a while. And by while I mean years.
Agreed - - I just did a quickie search to do a "what if?" iMac 27" build versus the Studio w/27" display, and with Apple's BTO apparently gone, found a 'good enough' alternative at Adorama's website.
In a fast / glossed-over quick look:
27" iMac (i9, 32GB, 512GB, base GPU; 1Gbit Ethernet) = $3200 MSRP
27" 5K Studio Display & M1 Max Studio = $3600 MSRP
IIRC, the 10Gb Ethernet option was +$100, so that's probably more like $3300 vs $3600 comparison, and since the Studio reportedly is benchmarking much higher than the i9, its arguably the better value to pick between these two as of today.
As such, I'd venture to speculate that the
puck vector that Apple is seeing is that their customer market for the 27" iMac has enough "higher end" customers who are willing to pay for a Studio M1 Max and one, probably two 27" Studio Display monitors that that's a more profitable path than an improved 27" M-based iMac for at least the near term...
...plus this will give a hardware bridge and a "nudge" for the high end Mac Pro market suppliers to accelerate their software support transition plans to move from Intel to Apple M silicone...
PS:
Oh, and if it hasn't already been said by someone else first ... "
xMac"! <g>