https://www.pcgamer.com/intel-is-discontinuing-its-quad-core-kaby-lake-x-enthusiast-processors/

After just 11 months on the market, Intel is retiring its quad-core  Kaby Lake-X high-end desktop (HEDT) processor family, the company revealed in a 'product change notification' (PDF) on its website. They'll remain on the market for a bit, but after some time, vendors will not longer be able to buy additional Kaby Lake-X parts from Intel.

That's not likely to pose a problem, for vendors or consumers, as Kaby Lake-X was always a somewhat confusing and uninteresting entry in Intel's HEDT category. It launched alongside Skylake-X for Intel's X299 platform, but was hard to justify buying unless you were looking for a cheaper upfront X299 solution with the intention of upgrading to Skylake-X down the line.