Techgage posted a brief article on the latest announcement from NVIDIA on their SLI support for X58-based (Nehalem) motherboards.

NVIDIA's SLI won't be available on X58? Think again! The company has just announced 'native' support on select X58-based motherboards, all without the use of their own chipset. Dual-GPU configurations will be enabled without a bridge, while the higher-end offerings, including a potential Quad-GPU, will.

NVIDIA to Enable SLI on Select X58-based Motherboards