There's some new chatter in the channels that AMD will be releasing an RX Vega 32 and 28 to replace the current 500 line. The cards would use the smaller Vega11 GPU.

This chatter is based on some RRA certificate spotting that wccftech noticed, coming from South Korea, where the new cards have been spotted. The names are RX Vega 32 and RX Vega 28, just multiply the numbers by 64 shader procs per cluster and you will notice that the cards have 2048  (Vega11 XT) and 1792 (Vega11 Pro) shader processors per card model. 

Here's where the story gets weird, it is stated that the cards would be fitted with an expensive 4GB HBM2 chip. That means a 1024-bit wide memory bus. If correct, the products would battle the field where the GeForce GTX 1060 is active.

AMD Might Replace RX 500 Cards with RX Vega 28 and 32