MacOS 10.15.4

macOS 10.15.4 is an update to macOS 10.15 (Catalina), released on March 25, 2020 by Apple Inc.

New features
This update adds the following features:

Finder: Screen Time: Music: Safari: App Store with Apple Arcade: Pro Display XDR: Accessibility: This update also includes bug fixes and other improvements: Enterprise content: Some features may not be available for all regions, or on all Apple devices.
 * iCloud Drive folder sharing from Finder
 * Controls to limit access only to people you explicitly invite, or to grant access to anyone with the folder link
 * Permissions to choose who can make changes and upload files, and who can only view and download files
 * Communication limits for controlling who your children can communicate with and be contacted by throughout the day and during downtime
 * Playback control of music videos for your children
 * Time-synced lyrics view for Apple Music, including the ability to jump to your favorite part of a song by clicking a line in lyrics view
 * Option to import Chrome passwords into your iCloud Keychain for easy AutoFill of your passwords in Safari and across all your devices
 * Controls for duplicating a tab and for closing all tabs to the right of the current tab
 * HDR playback support on compatible computers for Netflix content
 * Universal Purchase support enables the use of a singular purchase of a participating app across iPhone, iPod touch, iPad, Mac, and Apple TV
 * Customized reference modes that you can tailor to specific workflow needs by selecting from several color gamut, white point, luminance, and transfer function options
 * Head pointer preference for moving a cursor on the screen based on the precise movements of your head
 * High Dynamic Range output to HDR10-compatible third-party displays and TVs connected with DisplayPort or HDMI
 * OAuth authentication support with Outlook.com accounts for improved security
 * CalDav migration support when upgrading to iCloud reminders on a secondary device
 * Addresses an issue where text copied between apps may appear invisible when Dark Mode is active
 * Resolves an issue in Safari where a CAPTCHA tile may display incorrectly
 * Fixes an issue where you may receive notifications for updated or completed reminders
 * Fixes an issue with screen brightness for the LG UltraFine 5K display after waking from sleep
 * Apple Push Notification Service traffic now uses a web proxy when specified in a PAC file
 * Resolves an issue where updating the login keychain password after resetting a user password would cause a new keychain to be created
 * After enabling ”Search directory services for certificates” in Keychain Access preferences, searching by email address in Keychain Access or Mail now locates a user certificate stored in directory services
 * When setting the DisableFDEAutoLogin key in com.apple.loginwindow, you can now sync your FileVault password with the Active Directory user password after updating the user password
 * Reinstates the ability to update or restore iOS, iPadOS, or tvOS devices by dragging .ipsw files to the device in an Apple Configurator 2 window
 * Addresses an issue where sending the EraseDevice MDM command might not cause the device to be erased
 * When logging in as an Active Directory user after using deferred FileVault enablement, the user is now prompted for their password to enable FileVault