Bright Side of News spotted a photo of an upcoming AMD Socket G34 processor for the "Maranello" Opteron platform, which will feature the 45nm 8-core to 12-core Magny-Cours and the 32nm 12-core to 16-core Interlagos processors. You can see the asymmetric G34 chip right next to Socket F on the picture below.
As you can see on the picture below, Socket G34 is a native dual-die Socket design. It did not conform to all the compromises Intel had to make on the Socket 775 and 771 - but it also makes a mockery out of AMD presentations which lambasted Intel for going Multi-Chip Module.
There you go, now you know how Socket G34 processors look, featuring a quad-channel, 288-bit [64-bit + 8-bit ECC Parity] interface. This socket fits from eight to sixteen cores, available through 45nm Magny-Cours and 32nm Interlagos die-shrink.