官方版本91.0預計在 2021年08月10日(美國時間) 台灣時間08月10日~08月11日 更新 更新日誌 https://www.mozilla.org/en-US/firefox/90.0/releasenotes/ New︰ On Windows, updates can now be applied in the background while Firefox is not running. https://support.mozilla.org/kb/enable-background-updates-firefox-windows Firefox for Windows now offers a new page about:third-party to help identify compatibility issues caused by third-party applications Exceptions to HTTPS-Only mode can be managed in about:preferences#privacy https://support.mozilla.org/kb/https-only-prefs Print to PDF now produces working hyperlinks Version 2 of Firefox’s SmartBlock feature further improves private browsing. Third-party Facebook scripts are blocked to prevent you from being tracked, but are now automatically loaded “just in time” if you decide to “ Log in with Facebook” on any website. https://blog.mozilla.org/security/2021/07/13/smartblock-v2/ Fixed︰ Various security fixes https://www.mozilla.org/security/known-vulnerabilities/firefox/#firefox90 Changed︰ The "Open Image in New Tab" context menu item now opens images and media in a background tab by default. Learn more https://support.mozilla.org/kb/tab-preferences-and-settings Most users without hardware accelerated WebRender will now be using software WebRender. Improved software WebRender performance FTP support has been removed Enterprise︰ Various bug fixes and new policies have been implemented in the latest version of Firefox. See more details in the Firefox for Enterprise 90 Release Notes. https://support.mozilla.org/kb/firefox-enterprise-90-release-notes Developer︰ Support for Private Fields (TC39 proposal, stage 3) is available in DevTools. The support includes: object inspection, autocompletion, expression evaluation, variable tooltips, and pretty printing (bug) https://github.com/tc39/proposal-class-fields#private-fields https://bugzilla.mozilla.org/show_bug.cgi?id=1650188 The Network panel shows a preview of HTTP requests for fonts in the Response tab (bug) https://i.imgur.com/KQ7bOxe.png https://bugzilla.mozilla.org/show_bug.cgi?id=872078 Web Platform︰ Support for Fetch Metadata Request Headers, which allows web applications to better protect themselves and their users against various cross-origin threats. https://blog.mozilla.org/security/?p=2765 Added the ability to use client authentication certificates stored in hardware tokens or in Operating System storage.