Samsung Galaxy Note 7 has been in the rumor mill for a while, and virtually all leaks mentioned a dual-edge 5.7-inch Quad HD Super AMOLED display. However, it looks like a 6-inch variant is also being tested and might launch next to the smaller one as well. Even more, this phablet might even have a flat screen, but nothing has been confirmed so far.
According to a listing spotted on import tracker Zauba, a Samsung Galaxy Note 7 that carries model number SM-N930R4 has been sent from South Korea to India. The model number previously mentioned for Galaxy Note 5's successor is SM-N930, so the 6-inch model could also be just a prototype that will never turn into a product for the masses.
For now, there is no other evidence or reference to a 6-inch Galaxy Note 7, so all this should be taken with a grain of salt for the time being. In the end, everything could even be an error in the Zauba listing.