Maybe, but those shops are going to have to get clever.The thing is Jac, these new engines come with a two year warranty and as time progresses you will see more machine shops familiar with the new engines as compared to the old. The old 302 just cannot make as much power, do it as reliably, as efficiently or as cleanly as the modern 5.0 be it Coyote, Aluminator or Voodoo.
If we take the info Ron posted above as gospel then there are some issues in store. 'HE' said the 5.2L capacity is all bore, therefore for an increase from 5.0 to 5.2 so that means bore is increased from 3.629" to 3.720" [0.090" increase]
Bore centers on the Coyote are 3.937 which leaves 0.307 between cyls on the std Coyote reduced to 0.217" on this new 5.2 flat plane example which doesn't leave much room for further bore increases in the future unless they go like Honda with oval bore... also consider these are coated alloy bores so no more back yard hone jobs and any 'sleeve' replacements will be technical by nature.
Someone is bound to say increase the stroke, fine, but remember we are now flat plane and longer strokes come with a degree of difficulty. Another thing that 'HE' said in the interview in relation to the crankshaft- SOME parts are forged? does that mean the crank has moving pendulous bobweights? or Mallory metal added.
EDIT, I was just reading that the 'stroker' kit for the Coyote [ cross plane] that has yet to make production was going to be ~351 cu in with a 3.740" bore [max of 3.760"] I don't know why it has not made production, but since it used replacement sleeves maybe it weakened the core block strength in the process.