ASRock just won't do what Intel tells it to. The company may have issued BIOS updates that removed its SkyOC base-clock (or BCLK) overclocking features from many of its motherboards, but it's not abandoning the locked-CPU overclocking dream just yet. This time around, the company is taking the battle to the hardware. Its Fatal1ty H170 Performance/Hyper and Fata1ty B150 Gaming K4/Hyper boards both rely on an external clock generator for the BCLK signal. This generator appears to allow for base-clock overclocking of locked chips on these motherboards.
ASRock is rather taciturn about the purpose of this clock generator on its product pages for the Hyper boards. It describes the feature as an "external base clock generator which provides a wider range of frequencies and more precise clock waveforms." The spec sheet and manual both refer to "ASRock BCLK Full-range Overclocking," however, so it seems the base-clock overclocking game is back on for now.
Neither board appears to be for sale yet, but the non-Hyper B150 Gaming K4 is only $100 at Newegg, and the H170 Performance is $112. We'd expect prices for the Hyper boards to slot in near those figures.