Dell is listing an unannounced processor from AMD. For the ZEN3 AMD only has launched the X model, however, system builder Dell is now listing a Ryzen 7 5800.... AMD Ryzen 7 5800 (non-X) Spotted
Microcenter has had the X version in stock for a while https://www.microcenter.com/search/search_results.aspx?N=&cat=&Ntt=5800x&searchButton=search