Detailed pictures of Asus's upcoming 780i board have made their way online, and it looks like this will be one of the first boards to hit retail with support for Tri SLI.
If you're not familiar with the Nvidia nForce 780i chipset, then let us recap quickly. It is the same as the 680i, but with an added PCIe 2.0 controller, which communicates with the 680i chipset via HyperTransport.
The Asus P5N-T Deluxe has two x16 PCIe 2.0 slots, as well as a single x16 PCIe slot, two x1 PCIe slots and a single PCI slot. It seems to have just about every connectivity option you could possibly want with six SATA, eSATA, IDE, FireWire, Gigabit Ethernet, 7.1-channel audio with optical and coaxial S/PDIF.
The board has a rather interesting heatpipe layout, with the N200 PCIe 2.0 controller being located just above the top x16 PCIe 2.0 slot. Asus has added a separate heatsink for it, and it is connected to the 680i chipset via a heatpipe. Asus also provides a Tri SLI bridge with the board, and this might just be the first Tri SLI board to enter the retail market space.
You can check out a whole lot of pictures over at HotHardware and they've also stripped the heatsinks off the board for your viewing pleasure. You can find the pictures here