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The business name of an Intel processor is generally not a very good indicator to know its functions. The smelter often changed his mind en route, or used names that meant something before, for anything else. A recent example, the Core m5 and m7 used for ultraportables like MacBook, which became Core i5 and i7 while they have little to do with the processors of MacBook Pro.
To make matters worse, Intel would consider marketing future Core i7 processors without Hyper-Threading, the in-house technology that doubles physical cores with virtual cores . Until then, all "real" Core i7s had this function in common, while only some Core i5s benefited from it. In a future range, it is perhaps the Core i9 that would be the only ones to offer all this technology and it could depend on the range for the Core i7.
According to Ars Technica the new Core i7 without Hyper-Threading should however remain more powerful than the old with, if only because they would gain two physical hearts. As we have seen with the Coffee Lake used in the new MacBook Pro, six cores is now the standard on the high end, against four previously. But as the site also points out, these marketing maneuvers betray especially the failure of Intel, which has not really managed to move forward for several generations.
In many ways, the latest processors introduced by Intel and those expected in the coming months are variants of the Skylake family, which dates back to 2015 for the first models. In theory, innovations should come back when the company can burn its processors to 10 nm, but it is not expected before the course of the year 2019, without further precision. So in the meantime, we will have six-core Core i7, but without Hyper-Threading.
Finally, let us specify that the change was found on models dedicated to fixed computers, we do not know what is the case for processors dedicated to laptops. Apple uses almost only processors developed for laptops, including its Mac Mini or 21.5-inch iMacs.
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