Videocardz has gotten their hands on the launch driver for the RX 500 series of graphics cards, and it would seem that previous rumors have indeed been vindicated: the revised RX 500 series features new code names for the chips that tick at its very heart. The RX 580, according to this report, will feature a Polaris 20 XTX chip (oh ATI X1950 XTX, how I remember you from staring in awe at your price and performance in computer magazines...), while the Radeon RX 570 will be equipped with a Polaris 20 XL part. And while the RX 560 is lacking from the list, the little chip-that-probably-will, the Polaris 12, makes a cameo under the RX 550 series and a "Lexa Pro" GPU code name... Which is just so different from all others, both in form and content, that one must wonder where it is its real name or a simple placeholder.