Enhancements

The user interface has been redesigned to look more modern and make the Enterprise Policy Generator more pleasant to use
Short confirmation popovers now provide clear feedback after common actions such as copying the policies.json output to the clipboard, and saving, loading, renaming, deleting, or importing configurations
The policies.json output can now be viewed in fullscreen mode
Saved configurations can now be renamed
Saved configurations can now be reordered using drag and drop
A confirmation dialog helps prevent accidental deletion of saved configurations
The import dialog now shows an error message if a selected configuration file is invalid
Number fields now provide controls to increase or decrease values without typing
Filter matches are now highlighted in the user interface, including matches in policy option names
Configuration migrations during extension updates and when importing older configurations have been improved
Policy options can now contain explanatory headings without affecting the generated policies.json output

Bugfixes

A potential error that occurred when entering text in the filter field has been fixed

Enterprise Policies

Added support for the LocalNetworkAccess policy to configure security checks for access to localhost and local network resources
Added support for the SitePolicies policy to configure website-specific policies, currently including the option to disable the JavaScript JIT compiler
Added support for the XSLTEnabled policy to enable or disable XSLT support during the transition period before its planned removal from the web platform
Added support for the DefaultSerialGuardSetting policy to set the default behavior for the Web Serial API
Added support for the RelaunchRequired policy to require Firefox to relaunch within a specified period after an update
Added support for the update_url option in the ExtensionSettings policy to configure a custom update URL for extensions
The DefaultDownloadDirectory and DownloadDirectory policies now exclude each other to avoid configurations that define both download directory policies at the same time
The long list of options in the DisabledCiphers policy is now grouped by security characteristics