Mozilla Firefox 21.0 Released

Mozilla sent Firefox Version 21.0 to the release channel. The current update information does not indicate that security updates are included. 

Update:  The security updates were posted after this was published.  The update includes eight (8) security updates, in which three are critical, four high and one moderate.  The security updates are listed below.  

What’s New

• NEW -- The Social API now supports multiple providers
• NEW -- Enhanced three-state UI for Do Not Track (DNT)
• NEW -- Firefox will suggest how to improve your application startup time if needed
• NEW -- Preliminary implementation of Firefox Health Report
• CHANGED -- Ability to restore removed thumbnails on New Tab Page
• CHANGED -- CSS -moz-user-select:none selection changed to improve compatibility with -webkit-user-select:none (bug 816298)
• CHANGED -- Graphics related performance improvements (bug 809821)
• CHANGED -- Removed E4X support from Spidermonkey
• FIXED -- Some function keys may not work when pressed (833719)
• FIXED -- Browsing and Download history clearing needs unification to avoid confusion on clearing download history (847627)