The guys at Hexus have already got their hands on an MSI nforce 780a SLi motherboard, the K9N2 Diamond. They give a quick run down of what 780a offers (hybrid SLi) along with plenty of shots of the K9N2 & its bundled PCIe 1x X-Fi sound solution.

"Though Hybrid Power only functions when compatible NVIDIA cards such as the GeForce 9600 GT or 9800 GX2 are in use, it allows users to save power by disabling any compatible discrete graphics cards when they're not required."