The chipset will be paired with the ICH9 family south bridge in ICH9R and IHC9DH flavours.
The chipset Bearlake-X will have support for PCIe 2.0, 2x16X PCIe graphics, DDR3 running at 1333 speed, Quad core support. This chipset will follow after announcement of Bearlake-P and Bearlake-G chipsets in Q2 2007. The key difference is that the first Bearlake won't have as many features as the Bearlake-X and G+ especially the DDR 3 support.
It is still a year away but time flies when you're having fun. ยต