Firefox 157 binaries are now available as part of Mozilla’s regular release cycle.

Nova UI

• Described as “the biggest visual refresh in years”
• Modernizes the look of the browser chrome, sidebar, and menus

Media and WebRTC

• Hardware AV1 decoding for WebRTC video calls on supported devices (previously software-only)
• HDR video fixes
• Better audio/video sync when changing playback speed

Other Changes

• Amazon removed as a built-in search engine

Availability

• Binaries downloadable from ftp.mozilla.org