So, does that Viisi in Lumia 1520 Viisi stand for five-inch screen of the device? If so, then the probable specs look like this now,
WXGA (1280*768) resolution
Snapdragon 800 quad-core processor
Runs Windows Phone 8.1
Screen size of 5 inches
2370mah battery
Will come with 3 mid-size tiles
2GB of RAM,
32 Gig storage without expandable memory,
14 MP camera
Thanks to everyone, who enlightened us 🙂