It's still a long way out, but a new roadmap surfaced on the web, mentioning the Ryzen 6000 Notebook series with some broad specifications and features.

The document reveals information about Zen 3+ and Navi 2. AMD's Rembrandt "H" series for mobile would surface next year and is based on 6nm node fabrication as well as an integrated IGP updated towards NAVI 2 architecture. The new mobile parts will offer support for PCIe gen 4.o, LPDDR5/DDR5, and here's something new, USB 4.0

The lineup of processors will have multiple TDP based models, starting at 15W running to 45W. The roadmap also release the launch of Dragon Crest processors for tablets and handheld devices in 2022, again with Navi 2 graphics yet with a Zen 2 core design. 

AMD Ryzen 6000 Notebook Roadmap - Zen 3+ Rembrandt on 6nm and Zen 2 Dragon Crest confirmed