Since Nova Launcher introduced a new material design implementation to its beta, the beloved launcher has gone through 16 different beta steps and now is ready for primetime with the home-screen replacement graduating to a stable build. Nova Launcher 4.0 features the full material overhaul we’ve seen in the beta plus a few new features.
Included in the 4.0 stable release is three bundled wallpapers and a circle app animation. Much like opening folders in Nova, when you tap your favorite app, it will open in a circle out animation, complete with the prominent app icon color, giving the animation a colorful look to it. It can be found by going to Nova Settings > Look and Feel > App Animation > Circle. On top of that, there are a slew of cosmetic and animation changes, functionality improvements, a new grouped widget picker and a pull to search in the drawer and widget search.
If you haven’t already given Nova Launcher a go, now may be an appropriate time to do so. After eight months of development, I’m pretty sure you’ll find something to love in the launcher.
source: Kevin Barry on Google+