I first suggested Apple switch to 14" and 16" to give them more room to fix the keyboard issue a couple of years ago.
This was from a marketing standpoint but with an eye on the engineering challenge required to reverse the decisions made with the butterfly keyboard. Giving people a bigger, higher resolution, screen along with a longer battery life (thanks in part to Intel) serves to help Apple 'fix' the butterfly generation laptops while making it impossible to compare sizes because they are no longer the same product.
The fact that the 16" is a 'new' design but Apple haven't gone to town with a full event in which they'd have to mention the keyboard just follows on with Apple's quiet refresh press releases with the MacBooks since the butterfly keyboard issues became pronounced.
If the iMac/iMac Pro gets a full announcement in due course at WWDC because of a new form factor it might even make the lack of attention on the MacBook Pro 16" even more of a quiet embarrassment.
Back to a 14" MacBook Pro, then, and assuming that a suitable 28w CPU SKU with Iris Graphics can be found it's easy to assume that the scissor keyboard and a larger battery comes in. Double the storage like they did with the 16" and there's a very nice product for people to buy.
I bet it'll be a press release refresh though.
There are 15w Ice Lake 10th generation CPUs already listed on Intel's ARK site (eg
i5-1035G7) come with Iris Graphics too so they could use the same screen but lose the Touch Bar to be a MacBook Air using a retina screen.
Would Apple want to continue with a 13" Macbook form factor when there's a keyboard to fix?
Why would they when a later iteration of iPad/iPad Pro could fit into the space where the 12" Macbook would have gone?
As for AMD there's just not enough of a track record in the mobile sector for Apple to convert their 13-14" laptops over to the new APUs, and I'm sure that Intel would put a financially impressive deal in for Apple to stay with them for the new form factor with potential for 3-4 annual updates down the line.