Firefox Release 28

Firefox for desktops is now available for download. Key innovations: support for VP9 video codec, Opus audio codec for WebM, multi-line flexbox, and notifications from sites and web applications in OS X. List of all changes in Firefox 28 under the cat.

• Integrated support for decoding video in VP9 format ;
• Provided notification is displayed on a web application using the "Notification Center" in OS X;
• Added support for Opus audio codec for WebM;
• Support for the SPDY 2 protocol has been removed ( support for SPDY 3.1 has been added in Firefox 27 );
• Implemented the output of notifications about hanging the background thread;
• Added volume control for audio and video output via HTML5 audio and video tags ;
• Added support for the mathvariant attribute from MathML 2.0;
• Support for multi-line CSS3 properties of flexbox ( multi-line flexbox ) for simplified block layout of elements on the page.

Important

Firefox development with an interface optimized for Windows 8 Metro was discontinued due to “lack of user interest. If millions of users participate in testing preliminary versions of Firefox for regular Windows, the number of daily users participating in testing Firefox for Windows 8 Metro did not exceed a thousand. ”

References

Russian versions:
Windows: online installation / offline installation of
OS X
Linux

English versions:
Windows: online installation / offline installation of
OS X
Linux

All changes in Firefox 28 for developers