The NDA lifts at 6AM Central European time, 5AM UK time and late in the evening, at 21 hours, on the November the first in the US and A, as my famous Kazak colleague Borat likes to say.
That is when Intel plans to lift off the embargo on a bunch of reviews and we assume that will be the day to buy the CPUs as well. They should be swimming into the channel as we speak.
The four cores will each be clocked at 2.66GHz but you should know that by now. µ