Most people kinda had an idea this was coming. PF is 10 years old and they streamlined it for the Starfinder game, so a lot of that will be adopted to PF now I guess.
Here is announcement on ENWorld. I will probably follow along on the Paizo blog just b/c I love these discussions.
I doubt people will be interested (and we never have time) to do proper playtests. In any event, I will likely be buying the final product when they are done. :)
“It is amazing what you can accomplish if you do not care who gets the credit.” – Harry S. Truman