DDR4 is really mature and we're seeing pretty crazy memory speeds. G.Skill is introducing new memory modules for Intel's Z590 platform and this lineup includes dual-channel 16GB models with a frequency of up to DDR4-5333!
Specifications:

G.SKILL International Enterprise Co., Ltd., the world’s leading manufacturer of extreme performance memory and gaming peripherals, is elated to announce new extreme-speed DDR4 memory kits that push memory speed to the extreme limits on the latest Intel Z590 platform, including DDR4-5333 CL22 16GB (8GBx2), DDR4-4800 CL17 16GB (8GBx2), DDR4-4800 CL20 32GB (16GBx2), and DDR4-4600 CL20 64GB (32GBx2) under the Trident Z Royal, Trident Z RGB, and Ripjaws V series. These new DDR4 memory specifications offer a perfect choice for those pursuing extreme memory overclocking performance, building a powerful workstation, or for the ultimate gaming experience.
Ultimate Performance DDR4-5333 on the Intel® Z590 Platform
Dedicated to developing ever-faster extreme overclocking memory, G.SKILL is pushing the 16GB (8GBx2) kit capacity to a blistering speed of DDR4-5333. This demonstrates the remarkable memory overclocking support on the latest Intel Z590 platform, which has been validated on the ASUS ROG STRIX Z590-E GAMING WIFI, ASUS ROG MAXIMUS XIII APEX, and MSI MEG Z590I UNIFY motherboards with the latest Intel® Core™ i9-11900K processor.
Maximizing Performance with Extreme Latency
In the pursuit of the tightest CL timing available at high memory frequencies, G.SKILL is launching a new specification running at DDR4-4800 with an extremely efficient CL17-19-19-39 timing in 16GB (8GBx2), built with high performance Samsung B-die ICs. Below is a screenshot showing the memory kit running on the ASUS ROG MAXIMUS XIII APEX motherboard with the latest Intel® Core™ i7-11700KF processor.
