Then to answer your question directly- I don't know.
What *you* don't know is why... and here are those answers, too : I didn't look at it before the update; I haven't looked at it since I posted it; I probably won't ever look at it for the foreseeable future; Most people won't bother to look at it because it really doesn't matter overall what your PRL is; The PRL is most likely not in any way associated with the software/firmware update since it can happen at any time and not just with system releases.
satisfied?