https://wccftech.com/amd-ryzen-4000-series-launching-early-2020-zen-3-on-track-ceo-confirms/

AMD's president and CEO Dr. Lisa Su confirmed this Sunday that the company will be introducing its next generation Ryzen 4000 series processors by early 2020. The roll-out will start out with the company's next generation Ryzen 4000 series mobile parts, which AMD plans to debut inside a plethora of new notebooks at CES in January next year.

These APU parts will introduce the company's 7nm Zen 2 microarchitecture to the mobile arena, however the company isn't stopping there. Following mobile Ryzen 4000 series APUs will be the company's next generation Zen 3 Ryzen 4000 series desktop CPU parts in the same year.