Are new G0 chips really too good OCers? - No!

[turtle]

I'd have to go look around for references, but I'm fairly sure that I read that they are planning a socket change. But you mention them still having a FSB, so maybe I'm mis-remembering.

You are both correct. One will have IMC, one will not. They will use different sockets, neither will be 775.

Socket B = LGA1366 = Nehalem w/ IMC. Assumingly will use CSI..er...Intel QuickPath Interconnect.
Socket H = LGA715 = Nehalem w/o IMC = replacement for Socket T (775) = Probably uses FSB.