A new motherboard will be required as the new Extreme Edition processors use the new R4 socket, which is also called LGA2066. The same socket will also be used by Kaby Lake-X:
There will be a Kaby Lake-X 4 core processor with 95+ W TDP using the same LGA 2066 R4 socket . Both Skylake-X and Kaby Lake-X support the new chipset that is known as Kaby Lake-X.
This is 200 series chipset will be the successor of the Skylake 100. The new chipset will come with up to 24 PCIe 3.0 PCI express lanes. In fact this is the only major difference in the chipset. It does support Octane storage techhonlogy, something that 100 series chipset cannot. The Kaby Lake 200 series chipset supports 6 SATA 3.0 ports, up to 10 USB 3.0 ports, DMI 3.0, up to three 4Xports for PCIe 3.0 drives.