The issue is, it just doesn't matter does it? Ultimately if you want to go for a good gaming chip and you want more than 4 cores, you are gaming with a discrete card, the igpu is pointless, paying for the igpu is pointless and when there are cheap and widely available 8 core chips competing with the clock speed on quad core Kaby, then the likely slightly lower clocks of a hex core isn't going to do better against the 8 cores is it.
I said this 6 months ago, 6 core APU changes exceptionally little because if you're gaming on the iGPU, you don't need 6 cores, if you're gaming with a decent discrete card, the cost of an APU isn't worthwhile and getting only 6 cores for a higher cost than now widely available 8 cores isn't a great option.
If you want pure CPU performance for something outside of gaming, rendering, anything else, 8 core Zen in mainstream or anything 10+ cores on HEDT is the better option. So August, Sept, 2 months ago or 6 months from now, for which user is a 6 core lets say £350-400 chip a better option than either a cheaper quad core APU or a cheaper 8 core CPU?
At some point starting it seems maybe early next year, you'll have a lets say £250 Intel quad core APU, a £350 6 core APU or a £350 6 core CPU on the x299 platform. AMD will have £200 quad core APUs with likely 2.5-3x the gpu performance of either of Intel's APUs, then they have the 4-8 core mainstream chips with 8 core chips being likely £250 by then for the cheapest, maybe getting a 10 core CPU on x399 platform around the £450-500 mark. I'm not sure for what workload and in what situation any of the Intel chips make sense. I still think Intel's pentium, and an i3(if cheap) are really good chips.
If you're a budget user, non gamer, non power user then price is more important than absolute performance, surprisingly, this may be where Intel has an advantage, tiny chips and they make a dual core specific die meaning it's going to be much smaller than AMD selling a quad core with 2 cores disabled. If you are a gamer for laptop of deskop, small system or just budget conscious and want an all in one chip then Raven Ridge is going to absolutely destroy Intel. Intel with 14nm chips is barely competing with 28nm AMD APUs on a very old architecture. If you are a power user then at least till at some point next year, AMD will offer more cores and at a lower price than Intel across the range with more pci-e. SO for rendering, any io heavy, 3+ gpus.
I just can't see where a 6 core APU improves things for Intel. The thing is, they wouldn't have to kill margins, only reduce the number of chips on the HEDT platform, if they just like AMD will, offer both CPU and APU on the mainstream. Intel should have moved 6/8 core CPUs to mainstream to match AMD and kept x299 as 10-18 core... instead they offer a 6 core APU with no real user base against much better suited chips AND they extended x299 to include utterly worthless quad core Kabylakes which can't even use the x299 mobo you're paying through the teeth for. Intel honestly couldn't have got their plans more wrong intentionally.