• Pages for Mac version 10.3.9
• Numbers for Mac version 10.3.9
• Keynote for Mac version 10.3.9
  
  
• iOS Pages version 10.3.9
• iOS Numbers version 10.3.9
• iOS Keynote version 10.3.9

• Fixed Processor Speed information for Apple Silicon Macs.
• Fixed incorrect internal battery condition.
• Added support for Macs with a connected eGPU.
• Added new feature icons to the application toolbar.
• Updated macOS 11 'Big Sur' versioning method.
• Updated power adapter detection support.
• Updated machine and location identification strings.
• Other minor fixes and enhancements.

"This update fixes an issue where Exposure Notifications could incorrectly display logging profile language."

• Apple Plans First iMac Redesign in Nearly a Decade (bloomberg)
  
  
• Apple Plans Upgraded Macbook Pros with Return to MagSafe Charging (bloomberg)
  
  
• Microsoft Office for Mac (365/2019) version 16.45 (21011103)
  - See Jan. 13 release notes (with security updates for Excel and Word).
  
  
• A wall without a hole (Little Snitch Developer's Blog)

  "It seems that Apple is willing to admit mistakes. The unfortunate hole in the wall that raised a lot of privacy and security concerns in the Mac community appears to get closed in the upcoming version 11.2 of macOS Big Sur, allowing third-party firewalls like Little Snitch to reliably monitor and filter any network traffic again.
  Thanks Apple for listening!"

• If your Mac starts up to Options with a gear icon
  
  
• How to reinstall macOS
  - with separate instructions for Apple silicon Macs and Intel CPU Macs.
  
  
• Accept preinstalled Pro Apps on your new Mac
  
  
• Fonts included with macOS Big Sur
  
  
• Resolve issues between iTunes and third-party security software
  - removed "for Windows" from iTunes in title, and was previously 'Archived'.
  
  
• Migrate your Aperture libraries to Photos or Adobe Lightroom Classic
  (As of Jan, 15, 2021 rev date, some links are to articles no longer online. A later revision removed those links.)
  
  
• Identify your MacBook Pro model
  
  
• If you can't install macOS Big Sur on certain 13" MacBook Pros from 2013 & 2014

  "Follow these steps if you can't install macOS Big Sur on a MacBook Pro (Retina, 13-inch, Late 2013) or MacBook Pro (Retina, 13-inch, Mid 2014).

  When you install macOS Big Sur on these Mac models, the installer might say that the update cannot be installed on this computer, or your Mac might start up to a blank screen or circle with a line through it..."

  The article includes steps to try and solve the problem.
  
  
• If you need to install Rosetta on your Mac
  (Rosetta 2 translates Apps made for Intel-based Macs to run on Apple Silicon Macs)
  
  
• About Startup Security Utility (for Macs with Apple T2 Chip)
  
  
• Mac keyboard shortcuts
  
  
• Play HDR video on Mac
  - Includes a list of Mac models that support HDR.
  
  
• How to use Screen Time on your Mac
  
  
• Move your data from a Windows PC to a Mac
  - originally titled "About Windows Migration Assistant"
  
  
• How to Use Handoff to continue tasks on your other devices
  
  
• Add your Desktop and Documents files to iCloud Drive
  
  
• Access iCloud Drive files from your iPhone and other devices
  
  
• Measuring and calibrating Apple Pro Display XDR
  
  
• How to set up your HomePod, HomePod mini, Apple TV, or iPad as a home hub

• Adobe security bulletins on updates for Photoshop (APSB21-01), Illustrator (APSB21-02), Animate (APSB21-03), InCopy (APSB21-05), and Bridge (APSB21-07).
  (In most cases only Windows ver. was vulnerable, but updates available for Mac & Windows.)
  
  
• Microsoft January 2021 Patch Tuesday (isc.sans)
  - patches for 83 vulnerabilities, 10 critical.
  
  
• Cubase 11: More Customizable, More Inspirational, More Productive (yamaha)
  "Steinberg unveils Cubase 11, update to the award-winning music production system".
  
  
• Yamaha RX-A2A/V6A/V4A, TSR-700/TSR-400 Receivers Firmware Update