The official press release from Intel isn't out yet but most of the big hardware review sites have already published their review(s) of the new motherboards and detailed analysis of the new DDR3 memory modules is also available at several sites.
Besides the DDR3 memory support these new chipsets also support 1333MHz FSB for Intel's upcoming 45nm dual-core and quad-core processors.
In the third quarter of this year we can also expect the X38 and G35 Express chipsets from Intel. The X38 will support the new PCI Express 2.0, Dual x16 PCI Express graphics and 1333MHz DDR3 memory and the G35 IGP chipset will feature the Intel Graphics Media Accelerator X3500. The GMA X3500 graphics chip from Intel will support DirectX 10 with Shader Model 3.0 and T&L support - it's performance won't be exciting but perhaps it will be fast enough for low-end systems to run Windows Vista.