In an interview with Japanese website AVWatch, PlayStation 4 Pro System Architect Mark Cerny mentioned that, ultimately, PlayStation 4 Pro support will require no more than 1% of additional work in man-hours compared to the entire development of a game.
Cerny also explained that an increase in performance did not require a massive increase in the console’s size. The PlayStation 4 Pro is, in fact, only 19% bigger than the CUH-1200 PlayStation 4 released last year.
His personal estimate is that rendering at native 4K across the board would require a minimum of 8 teraFLOPS of computing power – not something that can be achieved at a reasonable price this year. That said, users will be able to discern the difference between games on PlayStation 4 and the improved versions on PlayStation 4 Pro "at a glance."
The PlayStation 4 Pro is slated for release in North America on November 10.