When Google announced Android 4.4 KitKat on their latest flagship Google Nexus 5, they showcased the then Google Experience launcher that was exclusive to Nexus 5. Google Experience launcher brought along the goodness of Google Now right into the homescreen. With Google Experience launcher, you were just a swipe away from accessing Google Now which provides contextual information cards.
Google Experience launcher has been a unique experience so far and available only on Google Nexus 5, but looks like things are about to change. Google renaming the launcher as Google Now launcher makes more sense because Google Now powers the search and it will make even more sense when(if) they make it available in Play Store.
Though the Google Now launcher may not be available in the Play Store yet, you can get the Google Now launcher on your Android smartphone by following the steps below.
1. Get the GoogleHome.apk and install it. [Download Link]
2. Update Google Search to the latest version. [Download Link]
3. Set the Google Now Launcher as your new launcher.
4. Walk through the setup.