FSR and QRRThis is my opinion.
FSR is some variation of QRR. Initial phase of both are same except the end process where PYR tweak the technology of QRR to build FSR. That means we may have other silicon product coming after FSR just charging little bit at the end process. I am guessing PYR when said they improve the technology for FSR that means they have better way of producing FSR then current QRR technology. They are more confident now playing with QRR. This is called engineering marvel. Good luck