TechPowerUp reveals details of the Gigabyte GA-X58A-UD9, an upcoming X58 motherboard with 24-phase VRM (two 8-pin connectors required) and four x16 links. Additionally, there's also support for USB 3.0 and SATA 6Gbps.
The launch date is unknown but it shouldn't take to long considering that professional overclockers already have access to samples.
The heatsinks over the CPU VRM are connected to the those over the chipset with heatpipes, the heatsink over the X58 chipset has a fusion cooler which can provide water-cooling, as well as attach to a Silent Pipe heatsink block. The heatsink over the ICH10R southbridge is about as big as the ones on the UD5, Extreme, and UD7 models. We expect there to be one or two nForce 200 bridge chips over the two x16 links from the X58 chipset, giving out a total of four x16 links. All 7 expansion slots are PCI-Express x16, looking at the three blocks of external PCI-E lane switches, there indeed are three x16 links split between six slots, and the 7th being a full x16 slot. So the electrical configuration could be x16/x8, x8, x16/x8, x8, x16/x8, x8, x16, for the seven slots.