I think I'll be the first one to post results
I received my 3930K on release date, but had to wait a week after that to get my Asus Rampage IV Extreme, you can read the details in this thread:
Project: Arctic Azure Mk V - i7 3930K + Asus Rampage IV Extreme + 3-Way GTX 580 SLI -
As far as OCing goes, my current rig is 100% stable at 4.5Ghz using 1.31V for Vcore, temps are very manageable maxing at around 60 degrees, I find this remarkable as this results are very similar to my previous SB build (2600K at 4.5Ghz @ 1.28V).
Now, going north of 4.8Ghz is another story, forcing me to up the voltage to 1.48V, and temps can reach 80~83 degrees, the processor becomes a completely different beast a 5Ghz, requiring 1.52V and hitting close to 90 degrees when running IBT, these results were found at around 70 degrees Fahrenheit ambient temp, I'm pretty sure trying at lower ambient temperatures is going to produce much better results.
The board has a plethora of OCing options, beyond what my MIVE board offered, and I'm still playing with them, trying to achieve the lowest voltage possible, if you guys have any advice, or can post your own personal experience, please do so