Mozilla Firefox 31.0 Beta 8 Now Available for Download

Mozilla has released Firefox 31.0 Beta 8 for Windows, Mac, Linux and Android. Firefox 31.0 Beta comes with a number of new features and improvements supposed to enhance the browsing experience for users and enable Developers to create Web content, apps, and add-ons more easily.

What's new features in Firefox 31.0 Beta?
Firefox 31.0 Beta includes a number of improvements supposed to helping developers build Web content, apps, and add-ons more easily than before. It also includes a canvas debugger and an add-on debugger. For users, Firefox 31.0 Beta includes a number of new features and improvements supposed to enhance the browsing experience.

According to Firefox beta notes, Firefox 31.0 Beta has the following changes:

New:
  • Add the search field to the new tab page.
  • Integration of generational garbage collection.
  • OdinMonkey: Use backtracking allocator for asm.js style code.
  • mozilla::pkix as default certificate verifier.
  • audio/video .ogg and .pdf files handled by Firefox if no application specified (Windows only).
  • Partial implementation of the OpenType MATH table.

Changed:
  • Removal of the CAPS infrastructure for specifying site-specific permissions (via capability.policy.* preferences). Most notably, attempts to use this functionality to grant access to the clipboard will no longer work. The sole exception is the checkloaduri permission, which may still be used as before to allow sites to load file:// URIs.

HTML5
  • WebVTT implemented and enabled.
  • CSS3 variables implemented.

Developer:
  • navigator.sendBeacon enabled by default.
  • New Array built-in: Array.prototype.fill().
  • New Object built-in: Object.setPrototypeOf().
  • CSP 1.1 nonce-source and hash-source enabled by default.
  • Dialogs spawned from the onbeforeunload event no longer block access to the rest of the browser.
  • Developer Tools: Eyedropper tool added to the color picker.
  • Developer Tools: Editable Box Model.
  • Developer Tools: Code Editor improvements.
  • Developer Tools: Console stack traces.
  • Developer Tools: Copy as cURL.
  • Developer Tools: Styled console logs.
  • Developer Tools: Add-on Debugger.
  • Developer Tools: Canvas Debugger.

Download Firefox 31.0 Beta:
The links in this section correspond to files available for this download. Download the files appropriate for you.


Notes:
  • First offered Firefox 31.0 to Beta channel users on June 12, 2014.
  • Firefox 31.0 Final is scheduled to be released on July 22, 2014.
  • Please do NOT use this Firefox Beta release on production machines. A Firefox Beta release should be considered for evaluation and testing purposes.

Reference:
Firefox Beta Notes.
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