Firefox 12.0 Beta 4 now available for download

Firefox 12.0 Beta 4 is now available for download. Firefox 12.0 Beta introduces few new features, but it makes many changes. Firefox 12.0 Beta removes User Account Control (UAC) prompt in Windows, as well as adding line numbers in the "Page Source". Smooth scrolling is now enabled by default (previously had to be enabled through options), as well as many other developer enhancements, bug fixes, and other minor changes. The full details of changes are available in this version of Firefox are listed in the "What's new in Firefox 12.0 Beta" section.

Overview
Firefox is a fast, full-featured Web browser. Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, a streamlined browser window that shows you more of the page than any other browser and a number of additional features that work with you to help you get the most out of your time online.

Note: Mozilla planning to release Firefox 12.0 Final on April 24, 2012.

Download Firefox 12.0 Beta 4:
Firefox 12.0 Beta 4 available for download at website listed below:

Firefox 12.0 Beta

Note: Please do NOT use this Firefox Beta release on production machines. A Firefox Beta release should be considered for evaluation and testing purposes.

What's new in Firefox 12.0 Beta
Firefox 12.0 Beta has the following changes:

New:

  • Windows: Firefox is now easier to update with one less prompt (User Account Control).
  • Page Source now has line numbers.
Changed:
  • Line breaks are now supported in the title attribute.
  • Smooth scrolling is now enabled by default.
  • URLs pasted into the download manager window are now automatically downloaded.
Developer:
  • The column-fill CSS property has been implemented.
  • Support for the text-align-last CSS property has been added.
  • Experimental support for ECMAScript 6 Map and Set objects has been implemented.
Fixed:
  • OS X: WebGL performance may be degraded on some hardware (713305).

Source:

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