Google app has been updated with a couple of minor visual changes. Those using custom launchers will now see update that enables full screen mode for Google Now.
The latest update bumps the version to v4.6 makes the status and navigation bars transparent for all users. Earlier, the status and navigation bar used to become transparent in Google Now when the Google Now Launcher was used. On third-party launchers like Nova or Apex, the status and navigation bar remained opaque/black which did not provide a seamless experience. The Search app is getting Material Deign elements throughout.
The update is being rolled out in stages so it will now show up immediately on your Android device.