I don't care for the process if it's one *real* stop iso improvement with no strings attached, i.e. iso1600 looks like
iso800 now inc. the dynamic range of the lower iso settings.
Also don't care for the manufacturing process. That's Canon's problem. :-)
Our problem as Canon users is, that I expect Canon will not be able to deliver a sensor+electronics matching the current Nikon D7100 sensor in terms of IQ. Not in resolution (20 vs. 24 MP) and probably even less so in DR across all ISO settings starting at base ISO nor in Hi-ISO Noise. At best, I expect the 70D sensor to come in "only" 1 EV lower in DR and noise across the entire ISO range.