The LGA2066 socket, which arrived in 2017, already has four generations of HEDT chips since then. And as far as is known, the platform is nearing the end of its useful life, which explains why Intel is not preparing new offers for it.
Intel is preparing a new series of Core X CPUs, and will most likely do so with a new socket and in 2021.
Cascade Lake-X is currently on the HEDT market, but the chipmaker has been stuck with this product as it only has 10-18 core processors which seems unconvincing when compared to the Ryzen Threadripper offering 24 to 64 cores.
AMD not only offers more cores at very attractive prices with the latest Ryzen Threadripper 3000 series, but it is also ahead in lithography using a 7nm node, not to mention PCIe 4.0 technology.
With Comet Lake-S 10th generation, Intel's 14nm manufacturing process is nearing the end of its scalability. Although Intel continued to increase the speed of the clocks, the chipmaker was unable to mine it cannot add more than 10 cores with a 14nm node.
Intel may not offer anything convincing in the HEDT space until the company settles firmly on the 10nm node and a new microarchitecture that is not yet another iteration of the aging Skylake.