Based on the GP104-150, this card is rumored to be the GeForce GTX 1060 (Ti), and unlike the GP104-200 based GTX 1070 it will likely feature 6GB GDDR5 memory instead of 8GB. This would imply the GTX 1060 (Ti) has a 192-bit memory bus.
Then there's also the GP104-400 based GeForce GTX 1080 model, which reportedly gets 8GB memory of the faster GDDR5X variety.