Custom build dual GPU graphics cards from Power Color, some might shrug.
Both custom cards have Lucid Hydra PCI-e interconnects as well as crossfire mode allowing it to be paired with any other graphics card on the market. Ok so now we are looking at something more than just custom cards but something more.
The 6870 x2 with dual fan cooler
The 6870x2 PCB showing the dual BARTS cores and Lucid Hydra
The 6970 x2 with a large dual fan cooler
The 6970 x2 PCB showing off 2x 6+2 phase VRMs
Source 1 2
UPDATE
Reports have suggested that the 6870 x2 is due to be released this month @ $449
