Many tech-related sources are reporting that their sources are acknowledging that the new HBM2 memory, which was supposed to be in NVidia’s new Pascal cards, will likely not be ready for 2016 mass production.
It would seem the issues stem to limited amounts of supply, which drive the costs up too much. There’s speculation that perhaps at the tail-end of the year, there may be a few top-tier cards with HMB2 available; however if true, it would likely be well above an affordable range.
In the interim, we’re likely going to see cheaper GDDR5X memory instead; which isn’t as fast, but still much faster than the GDDR5 interface that’s been in use for several years now.