I'm gonna disagree with everyone.
Xboxone is going desperate mode this fall and will temporarily hit $249.99. The firesale difference in 2014 lead to massive wins, whereas they still lost in 2015 with price parity.
We will see a permanent $299 ps4 price drop, and a $249.99 holiday base bundle. There by all means will be at least a $100 (probably $150) difference in skus. They may even launch the neo at $499 and give it a 3ghz gpu to allow for ps3 emulation.