NVIDIA's effects from the now-dead GPP are in full play here with MSI announcing their new MECH series of graphics cards, which won't be using the newer Vega GPU architecture but the older Polaris GPU architecture.
MSI's new MECH 2 series cards are split into two SKUs for now: Radeon RX 570 and RX 580. The MSI Radeon RX 580 MECH 2 8G OC is the flagship MECH 2 card in the RX 500 series range, with MSI's own TORX Fan 2.0 providing 22% more air pressure for improved cooling performance and lowered noise.
MSI expects its new RX 580/570 MECH 2 graphics cards to be in stores in July, and I'm sure a detailed unveiling at Computex 2018 which kicks off in a couple of weeks, and samples/reviews that will take place very shortly after.