By the way the AMD ROADMAP shows AMD ZEN4 (pcie5.0) for 2021 and ZEN5(pcie6.0 ?) for 2022... New socket comes out in 2H 2021 afair.
zen 4 by 2022 q2/q3 only because intel by 2021 q4 will have something more or less good, remember that competition drives people to outdo themselves, so if nothing from intel by q4 2021 then zen 4 only when intel has something more or less good.