Look at the official photo attached below, the black is really black, it's almost impossible to tell the black background of the display and the black bezel.
I think part of this comes from the dramatically improved contrast ratio.
1300:1 for iPhone 6 Plus, 1400:1 for iPhone 6, versus 800:1 for iPhone 5s
Anyway, the new display does look very promising.
You can get some official high res images from here.
http://www.apple.com/pr/products/iphone/iPhone.html


I think part of this comes from the dramatically improved contrast ratio.
1300:1 for iPhone 6 Plus, 1400:1 for iPhone 6, versus 800:1 for iPhone 5s
Anyway, the new display does look very promising.
You can get some official high res images from here.
http://www.apple.com/pr/products/iphone/iPhone.html

