The Intel Core i7-9700K made its way to the SiSoftware database and looks like it will be a non-Hyperthreaded part. Intel looks to reserve Hyperthreading for the Core i9 SKU from the next generation onwards, which makes the Core i7-9700K, the first Core i7 CPU to lack Hyperthreading making the Core i7-8700K a better choice for multi-threaded workflows.
https://www.notebookcheck.net/Intel-Core-i7-9700K-appears-in-first-benchmarks-Hyperthreading-to-be-a-Core-i9-exclusive-feature-in-future-Intel-CPUs.318384.0.html