MSI has confirmed that its X38 based board should be ready in October and that the DDR2 version of the board will follow the initial DDR3 version. A DDR2 X38 board is expected in Q4 but this is not the top on the priority list.
The X38 Diamond will have X FI sound and 4 PCIe slots all PCIe 2.0 compatible and will focus on DDR3. The new thing that comes with this board are dual channel PWM and great memory overclocking.
The final tweaks are under way and both Intel and MSI are focusing on the better overclocking and DDR3 performance.
X38 Diamond should be able to go over FSB 600 but this is something that we will have to see to believe.