The plot thickens:

It's also worth noting that - clock-speeds and resultant TFLOPs aside - the specs for RX 480 are point-for-point a match for the GPU in Sony's upcoming PlayStation Neo, all but confirming that the Sony mid-gen console refresh uses both Polaris technology and the new 14nm FinFET chip manufacturing process.
AMD's Polaris-powered RX 480 graphics card priced at $199 • Eurogamer.net