When will we see the first (popular) 6 inch phones?

The past few years you saw the size of phones grow and grow. From 3 inch to 4 inch to nearly 5 inch for all the flagship devices. So the next size would be 6 inch. I expect the next Note to be around 6 inch but do you think "normal" phones will ever go over the 5 inch boundary and go to 6 inch?

FYI:

HTC Dream:
3,2 inch
2008

Nexus One :
3,7 inch
2009

Nexus S:
4,0 inch
2010

Galaxy Nexus:
4,65 inch
2011

Samsung Galaxy S
4,0 inch
2010

Samsung Galaxy S II
4,65 inch
2011

Samsung Galaxy S III
4,8 inch
2012

Samsung Galaxy Note
5,3 inch
2011

Samsung Galaxy Note II
5,55 inch
2012