Some photos of a Sapphire Radeon RX 460 Dual-X have been posted on the web, the card was disassembled and as such you can have a peek at AMD Polaris 11 aka the Baffin GPU.
Baffin is the Polaris 11 made on 14nm. These product are intended for entry level and come with a 128-bit wide GDDR5 memory bus. The card use less than 75 Watts as they do not come with a power connector, also a fun fact is that they are tied to a PCI-Express 3.0 x8 host interface and not X16. so you can use it in a x16 slot is using just x8 (which is still plenty enough for the SKU series. The photo show the Sapphire with Dual-X cooling, and it's looking good for something entry-level.
AMD RX 460 Polaris 11 GPU (Baffin) shows itself