Before you get all confused, Um yeah, that's the un-announced Cezanne APU based on ZEN3 architecture. And hey, for 499 USD, it can be yours, my man.
Let's label him as a 'businessperson' named 'hugohk' from Hong Kong who offers an engineering sample of the AMD Ryzen 7 5700G processor for $499. Checking closer, the AMD OPN code is listed as 100-000000263-3, a sample series of the 5700G that already leaked a month ago, information wise.
This APU is based on the AMD Zen 3 architecture and offers 8 cores and 16 threads with a frequency of up to 4.45 GHz. Cezanne already launched for the mobile sector with the Ryzen 5000U and 5000H series, but not in the form of an APU for Desktop PCs. The seller has tested the sample and mentions that the Radeon Vega integrated graphics drivers are not yet compatible; ergo, a dedicated graphics card was required to install the APU. The man includes a CPU-Z Screenshot .. and that seems legit.
Ryzen 7 5700G can be bought on eBay for $500