Acer Slovakia seems to have published the details of the Nitro 50-100 gaming desktop tower that features the AMD Ryzen 5 2500X processor. The Ryzen 5 2500X and the Ryzen 3 2300X were not mentioned during the Ryzen 2 unveiling making this the first appearance of the CPU in the wild.
https://www.notebookcheck.net/The-AMD-Ryzen-5-2600X-makes-an-appearance-in-the-Acer-Nitro-N50-100-gaming-desktop.318254.0.html