If you own an Intel motherboard with a Z170 or Z270 chipset, you might believe that it only supports CPUs up to Intel’s 7th generation, known as Kaby Lake. Even the CPU socket’s pinout …
It's been their MO for a long time to keep using the same chipset for as long as possible, if they stop then stop giving either money and just don't upgrade, not that it really matters with the diminishing return each generation.