A:Answer No it is not. I have read that all Core i9 CPUs will use a new Socket R4, a 2,066-pin LGA socket that will require a brand-new motherboard. Intel's Core i9 family is not backward-compatible with existing Skylake or Kaby Lake motherboards.
Here's the Processor upgrade information:
TDP: 35 W
Socket type: LGA1151
Motherboard supports the following processor upgrades:
Processor TDP Integrated Graphics
Intel Core i7-8700T (Coffee Lake) 2.4 GHz Hexa Core 35 W Intel UHD Graphics 630
Intel Core i7+ 8700T (Coffee Lake) 2.4 GHz Hexa Core 35 W Intel UHD Graphics 630
Intel Core i5-8400T (Coffee Lake) 1.7 GHz Hexa Core 35 W Intel UHD Graphics 630
Intel Core i5+ 8400T (Coffee Lake) 1.7 GHz Hexa Core 35 W Intel UHD Graphics 630