I was told by an Apple Partner that all the new keyboards on the M1-M3 Macs , the iMac, etc. use the same keyboard. The Keyboard is essentially the underside of the top cover and the trackpad is included w the portables. It is an effort to design /use standard Apple Parts.
I have a M1 MacBook Pro 64g/2TB portable that I cannot type on because the keys are not what I am accustomed to using on my previous Macs. The best keyboard for me is on a Intel Based, MacBook Pro (Retina, 15-inch, Mid 2015. Yes, an old one.
Apple continues to blow it on the keyboard designs. Smaller is not better. Standard is better. The only thing achieved by smaller is I cannot touch type. I learned to touch type in High School during the Summer. My Neighbor was a typing teacher, and I took typing for 2 weeks. Best thing I ever learned.
These new keyboards are a pain for touch-typists. Perhaps not so much for 2 finger peck typists. I am seriously considering a different brand of computer and I have bought Macs since 1984. Yes, I am that old.
I think the new M series Mac portables have the trackpad and the keyboard as perhaps 1 replaceable piece. Maybe , maybe not. I was told that and i am not willing to take apart my M1 64G/2T just to find out. No reason to void the warranty.
I seriously question some of the directions Apple seems to be going in and not going in. At 77, I can do that with some degree valididty. On my M1 MacBook Pro, I think there is interaction between the Trackpad and the Keyboard and I also think the Keyboard impinges at times on the surrounding aluminum case. The Mad Passes all tests; so, they don't to anything except waste my time which at my age is valuable.
Apple needs to go back to the Old Keyboard Size. The New M series keyboards are a different size - measure them against an Intel Mac Keyboard. Sure, they can make production improvements, but not change the size.