This release does not have a Play Store Description, so we grabbed one from version 4.3.3:

Magisk XDA Release: forum.xda-developers.com/showthread.php?t=3473445

Install, upgrade, manage, configure the Universal Systemless Interface – Magisk within a single app!
Here are some key features:

Status
• Check Magisk Version and updates
• Check root status
• Check SafetyNet
Install
• Select boot image location
• Advanced installation settings
Superuser
• Manage Superuser permissions
• Toggle logging and notifications for each individual application
Modules
• Enable/disable, remove Magisk Module
• Manually add Magisk modules by selecting Magisk Module zip files
Downloads
• Download Magisk Modules hosted on the Magisk Repo
Magisk Hide
• Select the app you want to hide Magisk from
Settings
• Toggle systemless host support
• Toggle Busybox support
• Toggle Magisk Hide
• Tons of Superuser settings

… and much more to come!