The following are the first pictures of the Limulus case design. More information can be found in the PDF  slides that are running during the show. The case is a stock  Antec 1200 with some additional sheet metal to hold 3 additional microATX motherboards, an 8 port Ethernet switch, power control relays, and custom front panel (provides power light/switch, USB, and video out)

This is the side view. The large metal sheet on the right is the top of the motherboard "sandwich." The power supply is in the lower left corner. The Ethernet switch is on top of the power supply.