ANDROID 4.4 KITKAT RUNNING :
In line with previous leaks, the screenshots reveal some of the UI changes which Android 4.4 KitKat will bring. They include mildly redesigned stock apps including Quickoffice integration, new additions to the settings menu, as well as the cool-looking Android KitKat Easter egg.
According to the source of the screenshots, the Android build captured in them predate the official KitKat announcement. This explains the presence of a Key Lime Pie codename in them.
Android has always allowed the ability to replace any of the built-in apps with something else. But while it is possible to do this for certain functions using public APIs, for others, developers have to rely on private APIs, a practice Google condemns.
This is true for all the SMS applications currently on the store. But that is about to change with Android 4.4 KitKat. Google has announced that they will be making the APIs required for this public. Moreover, they are also introducing the concept of setting your default SMS app.
