In NYC, no notification and had to check manually. Update downloaded and applied without any issues. Wifi and BT performance seems unchanged for me. I can say that system performance has greatly improved. Even though I was not having the lockup/reboot issue I was definitely having some bizarre performance issues with apps and games that I should not have seen. These are all gone. So far so good. Will keep toying throughout the day to see if there are any other changes that are readily apparent.
Update: Ran my standard rounds of benchmarks and the results were very promising. Overall all benchmark scores have increased between 5% and 8%. Applications, particularly graphics intensive games, load MUCH quicker and perform much better as well.