SvennoJ on 21 May 2016
Seems plausible
2014
http://wccftech.com/amd-developing-20nm-ps4-xboxone-apu/
2015
http://www.anandtech.com/show/9418/amd-confirms-20nm-products-moved-to-finfet-warns-on-q215-earnings
20nm die shrink was intended yet failed somehow. Moving to finfet means a change in architecture, thus no 1:1 match with the current ps4 design. Which leaves Sony 2 choices, stick with the 28nm design and have no hope of increasing the profit margin, or design a faster ps4 that can comfortably run current ps4 games in compatibility mode while allowing upgrades as well and sugarcoat the missing slim and price hike by promising improved performance.
