According to Fudzilla, the Quad Core i7-3820 is slated for release on January 13th with a clock speed of 3.6GHz (3.9GHz with turbo mode).

As the only quad core CPU in the Sandy Bridge E lineup, the i7-3820 has a suggested retail price of $285, more economical when compared to the the $583 price tag found on the i7-3930.

source: Fudzilla