AMD's upcoming Zen 3 Vermeer lineup could include the 12-core Ryzen 9 5900X and the 8-core Ryzen 7 5800X. This further confirms that AMD will be aligning mobile and desktop CPU names under the Ryzen 5000 family. We are also getting to know that Zen 3 may get conservative when it comes to boost clocks but will be able to sustain the boost for longer periods.
https://www.notebookcheck.net/AMD-Zen-3-Vermeer-to-include-12-core-Ryzen-9-5900X-and-8-core-Ryzen-7-5800X-rumored-to-focus-on-boost-sustainability-over-peak-speeds.494515.0.html