According to Chiphell user, Intel is now expected to launch its W790 chipset for the high-end desktop (HEDT) series in the third quarter of 2022. There is no X699 chipset, which would launch alongside the Alder Lake series, but there is indeed a W790 (workstation) platform arriving at the same time as the 13th Gen Raptor Lake desktop series.
Intel has not released the new HEDT series since Cascade Lake-X which debuted in 2019. Assuming that the rumors are true, Sapphire Rapids-X would launch more than 3 years later.
via: VideoCardZ