Google App has received version 5.8 update with some old features back into the den. Also, some new features are also included in the latest version.
Google App version 5.8 beta’s features were first showed up in the Android M Developer Preview 2, then disappeared once Developer Preview 3 rolled out. There is now an ‘Allow rotation’ option in the Google app settings under homescreen. In this update, app icons in the drawer and homescreen are now similar in size to one another. You can also resize the icons to match your settings.
You can see the Google Play Store and News & Weather app icons are more compact and fit in better with the rest of the icons on the home screen in the right image, while the left image shows them slightly bigger than the others.