The event description, caught originally by Planet 3DNow! on Twitter and reported by Techpowerup.com, reads "Supporting the recent launch of AMD Ryzen 7000 Series processors“, suggesting that the event will obviously be held after the launch of the Ryzen 7000 series.
The AMD "Meet the Expert" event is meant to showcase the upcoming AMD X670E motherboards from its various partners like ASRock, ASUS, Biostar, Gigabyte and MSI.
AMD will most likely hold a separate launch event for the Ryzen 7000 series, but so far, there was no word on such a launch in August and earlier rumors pointed to a September launch so hopefully, AMD will clear this one soon.