It’s probably the Radeon RX 580. PowerColor has published a graphic for the upcoming Red Devil graphics. At present it is not known exactly what the model is, but the possibilities are really only two – Vega or Radeon RX 580. Nowadays it is rather the second model.
Compared to its predecessor, the new Red Devil has some minor changes in the design of the cooling system and styling. We have two fans here, as in the RX 470 Red Devil, although they seem to be larger. Graphics published on the network unfortunately do not disclose the configuration of additional power sockets, though this should not imply that they are not there at all.
The presented graphics suggest, however, that in the cooling system housing is placed LED backlight and today it probably does not surprise anyone. For now, there are no known GPU clocks and RAM. It is no surprise, since we do not even know what GPU would be mentioned ;-).
It is now assumed that the first Radeon RX 500 series graphics cards should have their debut April 18th and that is why the new Red Devil seems to be one of them.