All this mystery.....phhhht.
If I were betting, I'd bet that not only does it NOT contain any DC4 thingamachip, but that the DC4 is highly overrated to begin with.
Kinda like the Fox and the Grapes story, eh?
Seriously though, I would have expected Sammy to shout it from the mountaintops if the set was all that much better. Smart money would bet on a slight improvement at best.