Gigabyte is the first out of the gate this round. Unfortunately Gigabyte's pages are not jam packed full of information. The page mentions HDMI, but from the looks of the picture, it must be HDMI through one of those DVI to HDMI connectors that are sometimes included with cards.
In related news Provantage has a Sapphire HD 4870 X2 listed for $531.67. It is listed as Special Order with a subtitle of "Place your order with us and we will get it for you as quickly as possible."