I also received the update this morning. Unfortunately for me It didn't go smoothly. I rooted my phone and unlocked the bootloader, then installed a custom Recovery. Due to that the update would not apply. Had to find the original RUU rogers released with the phone on the internet and re-flash it to my phone before the update finally applied.
I'm quite please with the update. UI interactions are smoother, and I'm loving the face unlock feature.
I - like with any computer device - did a clean install. I flashed the internal memory and then downloaded the update. Ran it with no problems.
HOWEVER ... afterwards here are a few issues I'm having:
Some good things: