Version 57.0, first offered to Release channel users on November 14, 2017
Brace yourself for an all-new Firefox. It’s fast. Really fast. It’s over twice as fast as Firefox from 6 months ago, built on a completely overhauled core engine with brand new technology from our advanced research group, and graced with a clean, modern interface. Today is the first of several releases we’re calling Firefox Quantum, all designed to get to the things you love and the stuff you need faster than ever before. Experience the difference on desktops running Windows, macOS, and Linux; on Android, speed improvements are landing as well, and both Android and iOS have a new look and feel. To learn more about Firefox Quantum, visit the Mozilla Blog.
Making Firefox look, feel and perform faster was no small feat. Employees and volunteers from around the world worked in record time to create the best Firefox yet. We'd like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
Performance improvements for faster page loading and stability
Updated interface, including a revamped new tab page that includes top visited sites, recently visited pages, and recommendations from Pocket (in the US, Canada and Germany)
Video decoding is shut down when the tab playing the media is sent to the background or the video is not visible on the screen. Video resumes when the media tab is in the foreground and the player is visible on the screen. Audio will not be affected.
Added an option to enable tracking protection outside of private browsing
Automatically enable private mode on compatible keyboards during private browsing