The iPad Pro 2 was previously rumored to be released in early 2017, but that turned out to be false. Currently, we have no idea when Apple is planning to reveal it aside from a possible spring launch date. But spring is ending in a couple of month, yet the 12.9-inch tablet is nowhere in sight.
After March saw the launch of the iPad Air 2 successor (and a couple other Apple products), reports of the iPad Pro 2 died down. Now, they are back up again brought by the drop in iPad Pro stocks in Apple stores.