the gun ahead of the official NDA, Newegg.com has started to sell the new Nvidia GTX 580 card. Although the rumoured price was set at US $499.99, all the reference cards at Newegg.com are priced at US $559.99.
Newegg.com currently lists five different cards, where three of them are curently priced at US $559.99. All of the listed cards can be bought as a limited offer with a 10 percent discount if you have the promo code (if you sign up for Newegg newsletter). It is quite interesting to see that PNY's reference card sells for US $589.99. All of the cards are in stock and are limited to 2 per customer.
All of these reference cards work at 772MHz for the GPU, 1544MHz for Shaders and comes with 1536MB of GDDR5 memory clocked at 4008MHz.
You can check them out here