"macOS Big Sur 11.2.2 prevents MacBook Pro (2019 or later) and MacBook Air (2020 or later) models from incurring damage when they are connected to certain third-party, non-compliant powered USB-C hubs and docks."

I'm not running Big Sur, but watching Apple's Big Sur, Mac Mini, MacBook Pro, and MacBook Air forums for early feedback. (Was hoping it fixes CVM Server crashes, including from DVD playback.)
 

"This patch release fixes a possible loss of network connectivity due to a crash of the Little Snitch network extension. This crash could occur when an application used the QUIC protocol. This protocol is a replacement for HTTPS which is used primarily by Google Chrome and its derivatives when connecting to Google servers."

• Updated for macOS 11 'Big Sur' support.
• Fixed an issue in which valid SSDs would report as "not supported."
• Fixed an intermittent NVMe crashing issue.
• Fixed issue reading updated drive database.
• Updated Sparkle update framework to version 1.25.0.
• Other minor fixes and enhancements.

• Fixed an application crasher at launch.
• Corrected a drive database format change.
• Updated Sparkle update framework to version 1.25.0.
• Other minor fixes and enhancements.

• Apple Big Sur forum thread on some websites using GBs of Memory.
  - Includes Activity monitor screenshots from a M1 MacBook Air (8GB ram).
  (Heavy M1 swap file use has caused some concern on impact to SSD lifespan.)
  
  
• The mystery of the Silver Sparrow Mac malware (malwarebytes)
  
  
• Late Feb. Apple forums posts on malware (name) "will damage your computer".
  (March 8th MacOS 11.2.3 & Safari 14.0.3 fix a malicious web content vulnerability.)
  Posts on CleanParameterd, Original Moduled, ActivityInputd, DominantPartitiond, InitialSkilld, RecordMapperd, StandardBoostd, & "ManagerAnalogd" (here & here).
  There's other examples in both the Catalina & Big Sur forums. Some have removal info.
  (Typically using free version of https://www.malwarebytes.com.)
  Check System Preferences > Network > Advanced > Proxies (Uncheck any Proxy).
  Also check if a "Profiles" preference pane exists. (If so, delete unrecognized profiles.)
  Check in ~/Library/LaunchAgents, /Library/LaunchDaemons, /Library/LaunchAgents.
  One post said his browser search engine had also been changed (serving ads), so check browser extensions/addons, and clear browser cache/cookies.
  
  
• Apple wins a patent for advanced monitors based on a new Micro-LED Chiplet Architecture (ledinside)
  
  
• Apple's Advanced Manufacturing Fund helps COPAN Diagnostics ship millions of COVID-19 test kits (apple)

• What's new in macOS Big Sur 11.2.2
  
  
• Find out which macOS your Mac is using
  
  
• Migrate your Aperture libraries to Photos or Adobe Lightroom Classic
  
  
• If your Apple Watch Series 5 or SE is in Power Reserve and won't charge
  (Article revised Feb. 26, 2021. Issue was fixed in watchOS 7.3.1.)
  
  
• How to Transfer your AppleCare plan
  
  
• How to Cancel or change the payment method for your AppleCare plan

• Firefox 86.0 release notes and security fixes.
  
  
• Firefox ESR 78.8 includes "various stability, functionality, and security fixes".
  
  
• Mac Chrome 88.0.4324.192 Stable Channel Update (google)
  (Windows version is 88.0.4324.190)
  
  
• Sony A8/A9 OLED TVs Firmware Update v6.5042 (A8H, A9G, Others)