Radeon RX 580 and RX 570 will be receiving new code-names for their GPUs. The RX Radeon 580 will feature the Polaris 20 XTX and Radeon RX 570 will be fitted with the Polaris 20 XL.
The data was derived from an unreleased driver, as videocardz spotted. What's interesting is that the RX 560 is not spotted in the list, and in fact has been absent in all the rumors for a while now. The 550 however does show up and will get a Polaris 12 processor for code-name. VEGA isn't spotted in the drivers either.
AMD Radeon 570 and 580 Graphics cards use Polaris 20 XL & XTX
