Just curious about if there's a reference design of how to mount 12 8-chip board and setup the cooling solution/power supply in an elegant way?
And since its hash power fall on about the power of BFL's 'Single', are you considering to give it a code name? maybe 'Singular' or 'Singleton'??
not sure about 12, and not sure about elegant

but I'm thinking of building an enclosure something like this.
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open on both ends with 1 unit inside each compartment, then putting a box fan on the front and just leave the back open for all the wires and PSU and what not.
I'm assuming you can run 4 easy with a 1200W PSU? or is that pushing it?
depending on the size, I guess you could maybe make it 3X3 squares, which would fit 9, but I'd probably block off the middle box and only load 8.