Android 4.2 : Live in the Now

Live in the Now.

Google Now brings you the information you need, when and where you need it, before you even ask. Google Now tells you today's weather before you start your day, or when the next train will arrive as you’re standing on the platform. With the latest version, you can see popular photo spots nearby, track packages easily, get information about upcoming movies, and much more.
See what’s new in Google Now.

A new look for Google Search.

It's easier than ever to quickly get answers, explore, and browse search results. Android also lets you search the web with your voice, and it's convenient for getting quick answers on the fly. It speaks back to you and is powered by the Knowledge Graph, bringing you a precise answer if it knows it, and precisely ranked search results, so you can always find out more.

 http://www.android.com/whatsnew/