This release is just a maintenance release to fix a major bug for plugins that requires MessageBus feature. These plugins cannot be used with the previous version.
Also, connections based on Connection Strings should work better 

Previous version release notes

What's new for users

Improvements

Possibility to connect to Dynamics 365 CE Online with an account protected with Multiple Factor Authentication through UI (preview feature)
Highlight a plugin depending on the connection used
Open the same plugin multiple times with different connections
Connection displayed in the bottom left connection control is now synced with displayed plugin

Bug fixes

For next release, AutoUpdater should now be able to run XrmToolBox after update if XrmToolBox is located in a path with space character.

Known issues
For this release, Auto Updater might fail to run XrmToolBox after update. Please close AutoUpdater and run XrmToolBox normally

What's new for developers

Improvements

N/A

Bug fixes

N/A

What's new for administators

Improvements

N/A