Yes. All 570's I have seen come out of the box with 2nd gen support, its just if you want 3rd gen, sometimes that does require a flash depending on the bios it shipped with.
AMD Ryzen 3000 series ATX motherboard with Aura Sync, WiFi 6(802.11ax), 2.5G LAN, Intel 1G LAN, Dual PCIe 4.0 M.2 with heatsinks, SupremeFX and USB 3.2 Gen 2