The CES keynote did not touch on important aspects, but press representatives were able to obtain new info immediately after, when AMD CEO Lisa Su was kind enough to answer a torrent of questions at a separate Q&A session. Among the new details, Su confirmed the launch of high-end Navi-based GPUs with hardware-level ray tracing this year and the Navi APUs scheduled for 2021.
https://www.notebookcheck.net/AMD-CEO-confirms-launch-for-high-end-Navi-based-GPUs-with-hardware-level-ray-tracing-this-year-plus-Navi-APUs-in-2021.449507.0.html