I think that these dual GPU's are coming a little too late ... and with some specs a little under the "bar" ...
This generation of chips is very powerful ( well, +-, Nvidia yes ... AMD so so ) but they are power hungry ... and hot ...

So... the good times of GTX 295 and 5970 ... meh ... i don't see these new solutions being as good in practical terms as the old ones ( yes, they will be quicker, but i don't believe it will have the same "equilibrium" )