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!
From version Magisk Manager 6.1.0:
v6.1.0
- Introduce new downloading methods: no longer uses buggy system Download Manager
- Introduce many new notifications for better user experience
- Add support for Magisk v18.0
- Change application name to "Manager" after hiding(repackaging) to prevent app name detection
- Add built-in systemless hosts module (access in settings)
- Auto launch the newly installed app after hiding(repackaging) and restoring Magisk Manager
- Fix bug causing incomplete module.prop in modules to have improper UI
Variant
Arch
Version
DPI
(noarch)
Latest: 6.1.0 on December 8, 2018
(universal)
Latest: 5.5.5 on January 13, 2018
All versions
December 8, 2018
November 15, 2018
October 21, 2018
September 23, 2018
September 21, 2018
September 19, 2018
September 18, 2018