Transitioning from the previous Firefox version (e.g., Firefox 83) to the new (next) Firefox version (e.g., Firefox 84) requires reviewing many aspects of the changes that occurred since the last review/audit.

Previous Transitions:

• Firefox 82 - #40130
• Firefox 83 - #40186
• Firefox 84 - #40235
• Firefox 85 - #40275
• Firefox 86 - #40310
• Firefox 87 - #40360
• Firefox 88 - #40384
• Firefox 89 - #40400
• Firefox 90 - #40401
• Firefox 91 - #40466
• Firefox 92 - #40519
• Firefox 93 - #40520
• Firefox 94 - #40521

Sources of information:

• Network Audit

• Gecko Developer Documentation

• Firefox/GeckoView Closed Bugs

• Firefox/GeckoView Fixed+Resolved/Verified/Closed Bugs by milestone

• Firefox/GeckoView Not-Closed Bugs

• GeckoView change log:

  • mobile/android/geckoview/src/main/java/org/mozilla/geckoview/doc-files/CHANGELOG.md

• Android Components (mozac) change log:

  • docs/changelog.md
  • https://mozac.org/changelog/

• Application Services change log:

  • CHANGELOG.md
  • $ git log v67.0.3...v63.0.8 (see Network Audit for versions)

• Fenix Release Notes:

  • https://www.mozilla.org/en-US/firefox/android/84.0/releasenotes/
  • $ git log v83.1.0...v84.0.0-beta.2 (see Network Audit for versions)

Templates:

Prepare switch to mozilla9X

Full Transition

• # (Rebase tor-browser patches to 9X.0bX)
• tor-browser-build# (Make the list of components updates for switch to mozilla9X-based Fenix)
• tor-browser-build# (Update components for switch to mozilla9X-based Fenix)
• # (Review developer notes for Firefox 9X)
• # (Review GeckoView Changelog for gv9X)
• # (Review closed mozilla9X bug)
• android-components# (Rebase android-components patches for Fenix 9X beta X builds)
• android-components# (Review MozAC Changelog for Fenix9X)
• fenix# (Rebase Fenix patches to Fenix 9X beta X)
• tor-browser-spec# (FF9X network audit)
• tor-browser-bundle-testsuite# (Update tests when switching to Fenix 9X)
• fenix# (Review changes for Fenix9X)

Geckoview-only transition

• # (Rebase tor-browser patches to 9X.0bX)
• tor-browser-build# (Make the list of components updates for switch to mozilla9X-based Fenix)
• tor-browser-build# (Update components for switch to mozilla9X-based Fenix)
• # (Review developer notes for Firefox 9X)
• # (Review GeckoView Changelog for gv9X)
• # (Review closed mozilla9X bug)
• tor-browser-spec# (FF9X network audit)
• tor-browser-bundle-testsuite# (Update tests when switching to Fenix 9X)