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
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Browsing sessions with a high number of tabs are now restored in an instant
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Fine-tune your browser performance from the Preferences/Options page.
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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.
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Added Belarusian (be) locale
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Assign custom shortcuts to Firefox menu items on OS X and macOS via System Preferences > Keyboard > Shortcuts
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Simplify print jobs from within print preview
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Use virtual reality devices with the web with the introduction of WebVR
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Search suggestions are now enabled by default for users who haven't explicitly opted-out
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Search with any installed search engine directly from the location bar
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Sidebar (bookmarks, history, synced tabs) can now be moved to the right edge of the window
Changed
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Windows stub installer is now streamlined for simpler installation. Users requiring advanced install options should use full installers.
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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
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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.
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Breaking profile changes - do not downgrade Firefox and use a profile that has been opened with Firefox 55+.
Developer
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Insecure sites can no longer access the Geolocation APIs to get access to your physical location