That sort of a guarantee way beyond what's reasonable of Frame.work, they don't control their suppliers to that degree. They've already updated the peripheral chips & hardware even within "v1", both for bugs and supply issues.

Frame.work has pretty much implied the form factor will remain largely untouched, so you're likely to be able to swap a component in even years from now, even if it'll be an "accidental upgrade". That sounds quite reasonable to me...