Intel will begin to refresh their Haswell line of processors, according to VR-Zone, starting in Q2 and continue into Q3. This will be accompanied by their 9-series of motherboard chipsets. The Intel Core i7-4770 and Core i7-4771 will be replaced, not just surpassed, by the Core i7-4790. That said, the only difference is a 100MHz bump to both the base and turbo CPU frequencies.
The K-series processors will come in Q3 and are said to be based on Haswell-E with DDR4 memory. I find this quite confusing because of previous reports that Broadwell-K would appear at roughly the same time. I am unsure what this means for Broadwell-K and I am definitely unsure why some Haswell-E components would be considered part of the Haswell refresh instead of the Haswell-E launch.