The engineering sample spotted by Tum Apisak in the UserBenchmark database has a designation that is consistent with previously leaked codenames. As far as specs go, the early sample can boost to 3.7 GHz on a 105 W TDP, and also features 32 MB of L3 cache. In single-core tests, the 12-core CPU is 13% faster than the Ryzen 7 2700X.
https://www.notebookcheck.net/12-core-24-thread-Ryzen-3000-CPU-spotted-in-UserBenchmark-database.397616.0.html