https://www.techradar.com/news/intel-will-reportedly-introduce-the-z399-platform-for-new-hedt-processors

Intel may have more than Coffee Lake Refresh processors in store for us, as a new report suggests the company will also be launching a new series of motherboards and Skylake-X Refresh processors.

Intel will supposedly introduce a new Z399 platform to succeed its current high-end desktop X299 chipset, according to PC manufacturer who spoke to PC Builder’s Club. The Z399 chipset breaks away from the trend of Intel using an X-designation for its HEDT platform, and it’s mostly due to AMD already snapping up the X399 name for its Ryzen Threadripper and Ryzen Threadripper 2nd Generation CPUs.