Firefox 13.0b2 Beta for Windows/Mac/Linux

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A new Firefox Beta for Windows/Mac/Linux is now available for download. This beta makes updating to new versions of Firefox easier and includes more than 85 improvements to in-browser developer tools. Download Firefox Beta in your language and experience cutting edge features before they make it to final release. Provide feedback to help us refine and polish the next version of Firefox.
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What's New in Beta:

NEW

• When opening a new tab, users are now presented with their most visited pages

• NEW

  The default home page now has quicker access to bookmarks, history, settings, and more

• CHANGED

  SPDY protocol now enabled by default for faster browsing on supported sites

• CHANGED

  Restored background tabs are not loaded by default for faster startup

• CHANGED

  Smooth scrolling is now enabled by default

• DEVELOPER

  72 total improvements to Page Inspector, HTML panel, Style Inspector, Scratchpad and Style Editor

• DEVELOPER

  The column-fill CSS property has been implemented

• DEVELOPER

  Experimental support for ECMAScript 6 Map and Set objects has been implemented

• DEVELOPER

  Support for the CSS3 background-position property extended syntax has been added

• DEVELOPER

  The :invalid pseudo-class can now be applied to the

  element

• DEVELOPER

  The CSS turn <angle> unit is now supported