It will debut with two that will support DDR 3 1066 or DDR 2 800. I think that customers will have to choose between the two and you will see boards with the same chipset supporting DDR 2 or DDR 3 memory. The first is called P35 and it comes with FSB 1333 support. This chipset is set to replace the G/P965 one.
The second one, set to debut in Q2 2007, is an integrated one called G33. This also supports FSB 1333 or slower, DDR 2 800 and DDR 3 1066. it has support for Intel Clear Video architecture but there's no whisper of DX 10. This chipset is set to replace the 945G/P 946GZ.
X38 is the enthusiast top notch chipset scheduled for a Q3 2007 introduction. This is intended to replace the 975X chipset. It served us well but it lived too long. It cannot support DDR 2 memory at 1066, and we see that as a problem for enthusiasts. It supports PCIe 2.0, 2x16 PCIe graphic slots, DDR 3 memory at 1333 and a Quad core support. The high end chipset supports DDR 3 memory only so Intel wants to start the migration to DDR 3 only. It works matched with ICH9, ICH9R or ICH9DH.