It seems that the Chinese are not really bothered by NDAs opposed to the rest of the globe. A website called Chinadiy posted pretty extensive Core i7-4770K performance results. The 22nm processor is compared towards a Core i7-3770K through a number of benchmarks. Looking at the results they posted, as a desktop user you won't be really happy as the Core i7-4770K performance is nealy identical to its predeccesor. Then again, IGP wise there 's much left open to discuss.
Below a number of results courtesy of Chinadiy. Overall the common denominator seems to be a less then 5% performance increase. We'd strongly advise you guys to base your opinion on the final NDA reviews though and as always with Chinese leaked results, take them with at least a bit of a grain of salt.
Core i7 4770K Haswell review posted in China