Download Mozilla Firefox 38.0 Beta 8

Mozilla Firefox 38.0 Beta 8 is now available for download. Firefox 38.0 includes performance enhancements that improve the browsing experience for users and enable Developers to create Web content, apps, and add-ons more easily.

What's new features in Firefox 38.0?
According to Firefox release notes, Firefox 38.0 has the following changes:

New:
  • New tab-based Preferences
  • Share the active tab or window in a Hello conversation - enabled for first half of the beta cycle
  • Keep track of articles and blog posts with the Reading List - enabled for the first half of the beta cycle
  • Ruby annotation support
  • Base for the next ESR release.

Changed:
  • autocomplete=off is no longer supported for username/password fields.
  • URL parser avoids doing percent encoding when setting the Fragment part of the URL, and percent decoding when getting the Fragment in line with the URL spec.
  • RegExp.prototype.source now returns "(?:)" instead of the empty string for empty regular expressions.
  • Page load times improved by speculative connection warmup.

HTML5:
  • WebSocket now available in Web Workers.
  • Implemented srcset attribute and element for responsive images.
  • Implemented DOM3 Events KeyboardEvent.code.
  • BroadcastChannel API implemented (more at hacks.mozilla.org).
  • Mac OS X: Implemented a subset of the Media Source Extensions (MSE) API to allow native  playback on YouTube.
  • Implemented Encrypted Media Extensions (EME) API to support encrypted  video/audio playback.
  • Automatically download Adobe Primetime Content Decryption Module (CDM) for DRM playback through EME.

Developer:
  • Optimized-out variables are now visible in Debugger UI.
  • XMLHttpRequest logs in the web console are now visually labelled and can be filtered separately from regular network requests.
  • copy command added to console.
  • WebRTC now has multistream and renegotiation support.

Download Firefox 38.0:
The links in this section correspond to files available for this download. Download the files appropriate for you.

Notes:
  • First offered Firefox 38.0 to Beta channel users on April 3, 2015.
  • Firefox 38.0 Final is scheduled to be released on May 12, 2015.
  • Please do NOT use this Firefox RC release on production machines. A Firefox Beta/RC release should be considered for evaluation and testing purposes.

Reference:
Firefox Beta Notes.
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