According to TechTimes  the leak appears to have come from 3Dcenter which compiled a number of slides and details that were undisclosed so far, pointing out the highlights of the upcoming Pascal graphics processor.

It looks like the Pascal GPU100 features Stacked DRAM (1 TB/s) giving it as much as 12 TFLOPs of Single-Precision (FP32) compute performance. The flagship GPU can get four TFLOPs of Double-Precision (FP64) compute performance as well.

There are four different Pascal graphics cards are being tested and they appear to have similar specs. The top of the range will be the GP100 GPU. The Tesla GPU is expected to be seen during Q2 of 2016. The GP100 GPU is the direct descendant of the GM200 GPU which was seen in the GTX Titan X and GTX 980 Ti.