I reluctantly bought a M1 air when they came out and its crazy fast. PS, phocus, fcpx everything I need (incl epson drivers and screen calibration) works native and incredibly fast.
the M1 is not the answer for everybody and everything, rendering, export of 2000 hasselblad files will be faster on the next version of the chip (M2?) but to put things into perspective, I am doing all this on a MacBook Air. with 16gb ram. it easily compares to a top of the line intel MacBook pro or iMac. at a fraction of the price, size, weight, heat(!) and power consumption. when my MacBook Pro gave me maybe 3 hours shooting tethered (with fans blasting) this is faster, silent and lasts all day. crazy.
the iMacs will be great, for me a stationary workstation should be more powerful for fcpx rendering but anything PS related will be more or less instant.
I have last years iPad, the new M1 is supposed to be twice as fast, to be honest, I can't even imagine what that will do, working with hasselblad files is instant on the old one. I guess we might see better and real pro app support with better workflow support in iPad OS.