People WPCentral posted a photograph of what would be the new Nokia Lumia 1520, the first six-inch Mobile running Windows Phone 8, which in this case would be christened GDR3 update.
In the photograph may not deduct their technical characteristics, but it is rumored that we would see with your screen resolution Full HD (1920 × 1080 pixels), quad-core processor and a 20 megapixel camera. All this allowed by the operating system update GDR3.
No doubt that the model shown is only a prototype of the final product, but it is more than enough to give us the clue that the Finns are working on a mobile with the diagonal, since by now the largest model they have is the Nokia Lumia 625 which by the way is coming.