Mozilla Firefox v28.0 released

First offered to release channel users on March 18, 2014

What's New:

• NEW -- VP9 video decoding implemented
• NEW -- Mac OS X: Notification Center support for web notifications
• NEW -- Horizontal HTML5 audio/video volume control
• NEW -- Support for Opus in WebM
• CHANGED -- Now that spdy/3 is implemented support for spdy/2 has been removed and servers without spdy/3 will negotiate to http/1 without any penalty
• DEVELOPER -- Support for MathML 2.0 'mathvariant' attribute
• DEVELOPER -- Background thread hang reporting
• DEVELOPER -- Support for multi-line flexbox in layout
• FIXED -- Various security fixes

Known Issues;

• Unresolved -- Echo cancellation on apprtc.appspot.com fails (see 974537), Unresolved on v28 - Resolved in v29
• Text Rendering Issues on Windows 7 with Platform Update KB2670838 (MSIE 10 Prerequisite) or on Windows 8.1 has a workaround (see 812695)

https://www.mozilla.org/en-US/firefox/28.0/releasenotes/

Download:
http://www.mozilla.org/en-US/products/download.html

Fully Localized Versions:
http://www.mozilla.org/en-US/firefox/all.html

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Also See:

Vulnerabilities / Fixes:
Mozilla Firefox Multiple Vulnerabilities
Mozilla Firefox / Thunderbird / SeaMonkey Multiple Vulnerabilities

Mozilla Patches Pwn2Own Zero Days in Firefox 28