The first alleged parts from the larger 5.5" iPhone 6 have been shared by 9to5Mac



From MacRumors:

The image shows the front and back of an LCD backlight panel that measures ~14 centimeters or ~5.5 inches diagonally. The site claims this represents a part for the 5.5" iPhone 6 which has been rumored to be launching later this year. Apple is also expected to produce a 4.7" model as well. We've already seen some possible part leaks for the 4.7" model, but this is the first part leak for the 5.5" model. Reports had originally suggested the 5.5" model would be released after the initial 4.7" iPhone launch.

  First Leaked Display Part from the 5.5-Inch iPhone 6