See what’s new in Firefox!

Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.

55.0beta

Firefox Beta

June 14, 2017

Version 55.0beta, first offered to Beta channel users on June 14, 2017

New

  • Browsing sessions with a high number of tabs are now restored in an instant

  • Sidebar (bookmarks, history, synced tabs) can now be moved to the right edge of the window

  • Fine-tune your browser performance from the Preferences/Options page.

  • Make screenshots of webpages, and save them locally or upload them to the cloud. This feature will undergo A/B testing and will not be visible for some users.

  • Added Belarusian (be) locale

  • Assign custom shortcuts to Firefox menu items on OS X and macOS via System Preferences > Keyboard > Shortcuts

  • Simplify print jobs from within print preview

  • Use virtual reality devices with the web with the introduction of WebVR

  • Search suggestions are now enabled by default for users who haven't explicitly opted-out

  • Search with any installed search engine directly from the location bar

Changed

  • Breaking profile changes - do not downgrade Firefox and use a profile that has been opened with Firefox 55+.

  • Windows stub installer is now streamlined for simpler installation. Users requiring advanced install options should use full installers.

  • The Flash plugin is now click-to-activate by default and only allowed on http:// and https:// URL schemes. This change will be rolled out progressively and so will not be visible to all users immediately. For more information see the Firefox plugin roadmap

  • Modernized application update UI to be less intrusive and more aligned with the rest of the browser. Only users who have not restarted their browser 8 days after downloading an update or users who opted out of automatic updates will see this change.

Developer

  • Insecure sites can no longer access the Geolocation APIs to get access to your physical location

Developer Information