The update will also bring newly designed status and navigation bars, a full-screen mode, support for color emojis, improved closed captioning, enhanced security, smarter power use and more. The new dialer will allow you to look up contacts directly from the dialing pad or tap frequent contacts to make a call. The update to Android 4.4.2 improves the camera and offers the same enhanced "touch-to-focus" that the Motorola Moto X now features. The update automatically improves the photographs taken with manual settings using the Moto G's rear camera. Improvements will be also found in the gallery.
Motorola said that the Android 4.4.2 update for the Motorola Moto G will soon be available from other carriers and will shortly be rolling out in other regions.
source: Motorola (1), (2)