Unless they plan to add new features half-way through the production cycle<...>
In my opinion, sizing should have been taken into account for the entire production run at a max of 66% of all known requirements. I'm glad I am retired because I have fired PMs for less. Everyone must learn and there is no better teacher than the real-world experiences, but not considering a fair amount of reserved flash space in the hardware selection is inexcusably naive.
My comment about 644 was only half a joke..
Sorry there Doc, I just lost contact with reality and was focused only on the change! It's kind of funny now... Kind of...
Ray