This 27-inch iMac Pro reportedly should have launched in 2021
Apple made three 27-inch iMac prototypes in 2021 and while that all-in-one Mac desktop never launched, a similar iMac Pro could still be in progress.
Upcoming 27-inch iMac might feature mini-LED ProMotion display
ProMotion on the upcoming 27-inch iMac is claimed to offer an adaptive refresh rate between 24Hz and 120Hz.