Looks like MSI, AsRock and Gigabyte are supporting PCI-E 4.0 hardware on their boards for future compatiblity with Rocket Lake which will support PCIE 4.0. So far it appears Asus has no hardware support mentioned anywhere in their marketing materials, and EVGA appears to not have any mention of hardware support either. This is a big deal for longevity of the board, future expansion, so you don't need to purchase a new motherboard down the road that just to get the features other vendors are offering now with Z490.
Simple question, do EVGA Z490 boards also have the hardware and will they be supporting PCIE 4.0 with a future BIOS update like the other vendors?