"macOS Catalina 10.15.6 introduces local news in your Today feed in Apple News and improves the security and reliability of your Mac.

Apple News
• Local news in your Today feed provides extensive coverage of San Francisco, the Bay Area, Los Angeles, Houston, and New York City.
• More stories available from local news providers with a subscription to Apple News+.
• Your daily newsletter from Apple News can now be personalized with stories that reflect your interests.

This update also includes bug fixes and other improvements.

• Adds a new option to optimize video streaming on HDR-compatible Mac notebooks for improved battery life.
• Fixes an issue where the computer name may change after installing a software update.
• Resolves an issue where certain USB mouse and trackpads may lose connection.

Enterprise content:

When using the built-in keyboard with a non-U.S. keyboard layout on some Mac models, passwords with certain characters are no longer rejected at the Mac login window.

Allows command-line tools that don't use CFNetwork, such as curl(1), to continue connecting to TLS servers that use certificates issued by the recently expired AddTrust External CA Root.

Major new releases of macOS can be hidden when using the softwareupdate(8) command with the --ignore flag, if the Mac is enrolled in Apple School Manager, Apple Business Manager, or a user-approved MDM.
(This change also affects macOS Mojave & High Sierra after installing Security Update 2020-004.)

Some features may not be available for all regions, or on all Apple devices. For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT201222."

macOS 10.15.6 Delta & Combo Update Downloads
• Download macOS Catalina 10.15.6 Update (2.99 GB)
• Download macOS Catalina 10.15.6 Combo Update (4.82 GB)
  
  Security Update 2020-004 Downloads
  (Download pages list file sizes the same as previous -003 update.)
• Download Security Update 2020-004 (Mojave) (1.68 GB)
• Download Security Update 2020-004 (High Sierra) (2.11 GB)

"Installation Note: The installer requires System Preferences to be launched during the installation process. Do not manually close System Preferences until after clicking Allow in the Security & Privacy Preferences, later in the process.

The installer also requires rebooting the system after the installation process. Do not launch any other applications until the process is complete and the system has been rebooted.

New in Release 387.10.10.10.40.138"
(No new info, same notes on D/L page as previous drivers, so I won't repeat it here.)

Previous macOS Nvidia drivers are on our Mac Nvidia Drivers downloads page.
 

• Safari 13.1.2 security fixes
  - Included with macOS 10.15.6, available for macOS 10.14.6 and 10.13.6.
  
  
• Apple Xcode 11.6 (for macOS 10.15.2 or later)
  - Supports developing apps for iOS/iPadOS 13.6, tvOS 13.4, watchOS 6.2, & macOS 10.15.6.
  - DriverKit API enhancements in the macOS SDK.
  - Additional bug fixes and stability improvements.
  (Security Updates page notes "This update has no published CVE entries".)
  
  
• iOS 13.6 release notes (long list - summary below).
  "iOS 13.6 adds support for digital car keys, introduces audio stories in Apple News+ (US only), and contains a new symptoms category in the Health app. This release also includes bug fixes and improvements."
• iPadOS 13.6 release notes (summary below).
  "iPadOS 13.6 introduces local news in your Today feed in Apple News (US only) and includes bug fixes and improvements for your iPad."
• About the security content of iOS 13.6 and iPadOS 13.6
  
  
• iOS 12.4.8 release notes.
  "Provides important security updates and is recommended for all users.
  Some features may not be available for all regions or on all Apple devices."
  (Security Updates page notes "This update has no published CVE entries".)
  
  
• watchOS 6.2.8 release notes and security fixes.
  "Includes new features and improvements:
  - Adds support for digital car keys for Apple Watch Series 5.
  - ECG app on Apple Watch Series 4 or later now available in Bahrain, Brazil, and South Africa.
  - Irregular heart rhythm notifications now available in Bahrain, Brazil, and South Africa."
  
  
• tvOS 13.4.8 release notes and security fixes.
  - "includes general performance and stability improvements". (the usual note.)
  
  
• watchOS 5.3.8 release notes
  "This update provides important security updates and is recommended for all users."
  (Security Updates page notes "This update has no published CVE entries".)