NVIDIA 750i and 780i to be announced on 17 Dec 2007
 

The next generation NVIDIA chipsets for the Intel Quad Core processors are scheduled to launch on the 17 DEC. The new chipsets features a PCIe switch NF200, enabling Triple SLI technology with more PCIe lanes.

It's an old NVidia northbridge with an even older NVidia southbridge plugged into a shiny new PCIe-HyperTransport bridge... Presumably, that means it will have all of MCP51's bugs combined with the no-longer-fantastic overclocking of C55 chipsets...