revgen
Screenwriter
http://www.zavvi.com/blu-ray/sin-city-2-a-dame-to-kill-for-3d-zavvi-exclusive-limited-edition-steelbook-includes-2d/10985782.html
It's exclusive to British retailer Zavvi right now. With a December 15th release date.
Amazon.co.uk only has preorders available for the 2D version.
So far, no word about a US release date for either 2D or 3D versions.