What will Apple serve up Apple's services on? OSX on Mac Pros or just racks and racks of minis? Or will there be some sort of dense blade chassis? I see 2 i

What will Apple serve up Apple's services on? OSX on Mac Pros or just racks and racks of minis? Or will there be some sort of dense blade chassis? I see 2 issues that they need to solve, 1) they need more density than 1U, that's just how it seems to be going. 2) They need virtualization.