Google has released an update to Google Now Launcher today[1st Aug 2014], were the major update is, it was optimized to run on devices running android 4.1 and later versions. The official announcement made in twitter. Previously Google Now Launcher was available only to devices running android 4.4 and it was preloaded in android kitkat version. The app makes Google cards repository accessible by swiping to the right of the home screen or speaking an “OK Google” voice command from that main home screen. After the success of Google Now Launcher on KitKat, now google optimized it to all the android devices to make the users to experience it.
Google Now Launcher Update was rolled out globally and it was available in Google Play Store. Download the app and experience the Google Now Launcher.