FUD Zilla heard from its sources that AMD will soon launch "top to bottom" designs based on the Vega architecture. The site claims Vega will come in several varieties, the highest-end cards will feature HBM2 but there will also be models with GDDR5 and perhaps even GDDR5X:
Last year when AMD showcased Vega on its roadmaps, many assumed that this is will be the HBM 2 card and they were right. There is an HBM 2 card based on Vega architecture that should attack Nvidia in the high-end space.
But there will also be other cards, as Vega hits other memory interfaces and not just the HBM 2. You can expect to see GDDR5 variants too. Our sources had no information if there will be GDDR5X card based on Vega architecture but it would not surprise us. Nvidia made a good product using this type of memory as it sits at the right price/performance ratio.