heatpipe will be the cooling method, but won't extend to the SB because many ppl comment that it is not "thermally" necessary and is bad when they need to remove it for crazy overclocking using casade or sth. else.
Will there be any cooling on the South Bridge, or will it be left bare/naked? It looks like unless it was a small copper/aluminium heatsink or a heatpipe, then the 2nd pci-e port may not be able to accomodate some cards.
Matthew