Over the last week the site Fudzilla twice published the news about the possible release next year a new memory GDDR6 for video cards by Micron company. In both cases, we have expressed doubts about the information.
Micron had commented on the rumor. According to the company, in the next year plans to release memory type GDDR5X, but not GDDR6. And it's different memory. Memory GDDR5X allow developers GPU simple means - without changing the architecture - to increase graphics card memory performance . Thus, by the way, GDDR5X should not be opposed memory type HBM - they have different niche applications. They are not competitors.
It is likely that GDDR5 memory chips and GDDR5X per contact will be compatible. At data rate can be potentially doubled.