Firefox（ファイアフォックス）

Version 81.0 （2020/09/22）

• New
  ・You can pause and play audio or video in Firefox right from your keyboard or headset, giving you easy access to control your media when in another Firefox tab, another program, or even when your computer is locked.
  ・In addition to our default, dark and light themes, with this release, Firefox introduces the Alpenglow theme: a colorful appearance for buttons, menus, and windows. You can update your Firefox themes under settings or preferences.
  ・For our users in the US and Canada, Firefox can now save, manage, and auto-fill credit card information for you, making shopping on Firefox ever more convenient. To ensure the smoothest experience, this will be rolling out to users gradually.
  ・Firefox supports AcroForm, which will soon allow you to fill in, print, and save supported PDF forms and the PDF viewer also has a new fresh look.
  ・Our users in Austria, Belgium and Switzerland using the German version of Firefox will now see Pocket recommendations in their new tab featuring some of the best stories on the web. If you don’t see them, you can turn on Pocket articles in your new tab by following these steps. In addition to Firefox’s new tab, Pocket is also available as an app on iOS and Android.
• Fixed
  ・Various security fixes.
  ・We’ve fixed a bug for users of language packs where the default language was reset to English after Firefox updates.
  ・Browser native HTML5 audio/video controls received several important accessibility fixes:
  　・Audio/video controls remain accessible to screen readers even when they are temporarily hidden visually.
  　・Audio/video elapsed and total time are now accessible to screen readers where they weren't previously.
  　・Various unlabelled controls are now labelled making them identifiable to screen readers.
  　・Screen readers no longer intrusively report progress information unless the user requests it.
• …（省略）

Version 80.0.1 （2020/09/01）

• Fixed
  ・Fixed a performance regression when encountering new intermediate CA certificates (bug 1661543)
  ・Fixed crashes possibly related to GPU resets (bug 1627616)
  ・Fixed rendering on some sites using WebGL (bug 1659225)
  ・Fixed the zoom-in keyboard shortcut on Japanese language builds (bug 1661895)
  ・Fixed download issues related to extensions and cookies (bug 1655190)

Version 80.0 （2020/08/25）

• New
  ・Firefox can now be set as the default system PDF viewer.
  ・The name reported by accessibility tools for items in multi-tiered tree controls no longer incorrectly includes information from items at deeper levels, providing users with the correct level of content when using a screen reader.
• …（省略）