The Inq. are reporting ATI will reslease their new cards with a new Internal crossfire connection! No more Dongles!
NV have the SLI bridge but that comunicates only one way at a time ATI's version will work in both directions at the same time.....ie. more bandwidth.
See pic here (courtesy of the Inq.)

Notice the 2 bridge connectors? 'Bout time ATI got rid of the external xfire connection!