GIGABYTE Server Announces MW51-HP0 Motherboard: C422 for Intel Xeon-W
 

With Intel’s latest release of the Xeon-W processor line, they have bridged the gap between consumer and enterprise platforms once again making cross-compatibility easier. The Xeon Skylake-W CPU addresses these issues and is more or less, a Xeon version of the current Skylake-X processors with all the pro features enabled. Traits such as extended memory support, vPro, Intel’s AMT and the standard enterprise Reliability, Availability, and Serviceability (RAS) features are turned on and ready to go. This new set of processors,despite using the same LGA2066 socket as Skyake-X, will require a new chipset C422 and will not work in X299.
http://www.anandtech.com/show/11777/...d-c422-chipset