http://www.pcgamer.com/gskill-cranks-out-high-speed-ddr4-memory-kits-for-coffee-lake/

Whether you're looking to pair a new 8th generation Intel Core desktop processor (Coffee Lake) with a high-capacity and modestly fast kit of RAM or want to blow the doors off with the fastest frequency available, G.Skill will oblige. The memory maker introduced a handful of new DDR4 memory kits today, all of which sport high-performing Samsung B-die DDR4 chips.

G.Skill says its new kits are specifically intended for Coffee Lake setups consisting of one of Intel's newest generation processor and a Z370 chipset motherboard. That's not to say these kits won't work in other types of setups, though your mileage may vary in hitting the advertised frequencies and timings.