If anyone else is interested, I was able to confirm that this is the board that AMD was referencing in their launch publicity:
http://www.msi.com/product/server/MS-S0231.html
The AVL lists Opteron 3200 series compatibility!
Now if I can only figure out where to get one...
Also, I am not that familiar with server hardware. Whats up with the odd dual inline PCIe 4x slots? Can I use those for standard cards? How do I make them reach the back of the case?