In Pictures: Android 4.2 - A visual guide to what'...
Android 4.2 brings about some small but meaningful improvements to the Gmail app. Some of the added touches are long overdue, like the ability to have a message automatically formatted to fit the width of your screen and the option to pinch to zoom in and out of email text.
Other Gmail changes make the app just a little more user-friendly. You can now, for example, swipe any message left or right to dismiss it and archive it directly from your inbox; you can also easily archive messages while viewing them within a specific label.
In Pictures: Android 4.2 - A visual guide to what's new