Arrow Launcher update adds the option to sync files, other new features0
The most important seems to be the ability to sync files between smartphone and PC. The new option is available within the new Arrow Hub card, which functions as a widget.
Also, the developers added a new MSN News card with category selections so that you can get your everyday dose of news with just a few taps. The official changelog mentions that the update enhances the search feature with voice search and the option to search for QR (barcodes).
But that's not all, as Microsoft added support for more features on backup and restore like widgets (icon) pack and additional settings. The search experience should now be more responsive, and there's a new option to turn off recent apps in app drawer.
Lastly, Arrow Launcher users will also find a new voice input feature for Reminder & Notes. All the new features and improvements mentioned have already been added to the stable version of the launcher, so make sure you update it via Google Play.