Holy crap, there's a photo of an assembled board on ebay and BKK is still driving to pick his parts. This is a dog eat dog business for sure.
No mention of a heatsink.
The picture on ebay was downloaded directly from a thread here on bitcointalk and put up by some random person. It's not a functional board yet, all they did was use BKK's board specs and BOM to assemble one. Check the Terrahash and BKK threads for more details.