AnandTech: "We have received numerous emails about the upcoming X58 motherboards concerning price, availability, and of course performance. Pricing has yet to be determined as we believe each of the manufacturers are waiting to hear what their competitors will charge for a board before committing to a price. What we do know is that the $185 price target mentioned for several X58 motherboards back at Computex has quickly turned into an exclusive $250 and up club from all indications.
Retail availability and launch date is another question that we cannot answer, we know the answer, it's just that our hands (and mouths) are tied by an NDA. All we can say it that it will be soon, but soon for some is tomorrow and for others it could be a month for now. Let's just say they will be out sometime this quarter."