The difference is that with support for wide color gamut profiles, developers can use the full range of colors — they just have to enable it for their apps first. (thenextweb.com)
It's brighter, offers better contrast, and includes wide color gamut support for more vivid, true to life colors. (macrumors.com)
The display is now 25 % brighter and features wider color gamut. (iphonehacks.com)