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Firefox Channels: Beta 40 / Developer 41 / Nightly 42

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#1 Chachazz


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Posted 30 September 2011 - 12:48 PM

Attached File  firefox-beta_48x48.png   5.91KB   0 downloads: Beta 40 is available    (32-bit & 64-bit)

       ~  Release notes                                

Attached File  Developer_Ed 48x48.png   6.58KB   0 downloadsDeveloper Edition(Aurora) 41  is available  (32-bit & 64-bit)
                 ~ Release notes
 Attached File  firefox-nightly 48x48.png   5.88KB   0 downloads: Nightly 42 is available   (32-bit & 64-bit)
                ~ Localised builds
Firefox Mobile Channels
: Beta, Aurora, Nightly, | Wiki - More info

Follow channels development at Firefox Release Tracking
Attached File  Firefox Release Schedule.png   17.17KB   1 downloads

#2 Chachazz


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Posted 13 May 2015 - 08:12 PM

Firefox 38.0.5

first offered to Beta channel users on May 12, 2015


The release schedule was changed and a 38.0.5 will come between 38.0 and 39.0.
(Firefox 38 was previously planned as the 'big spring release'.)
Planned: 4 beta builds (published to users) of 38.0.5 and 1 RC - Release June 2, 2015


What's new:

  •  New - Keep track of articles and videos with Pocket
  •  New - Clean formatting for articles and blog posts with Reader View
  •  New - Share the active tab or window in a Hello conversation

Download - All systems & languages


Want to try x64 build? Find it here

#3 Chachazz


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Posted 02 June 2015 - 07:39 PM

Firefox 39.0 beta

first offered to Beta channel users on May 28, 2015


What’s New
  • New - Support for new Unicode 8.0 skin tone emoji
  • New - SafeBrowsing malware detection lookups enabled for downloads (Mac OS X and Linux)
  • New - The malware detection service for downloads now covers common Mac extensions
  • New - Support for 'switch' role in ARIA 1.1 (web accessibility)
  • Changed - Removed support for insecure SSLv3 for network communications
  • Changed - NPAPI Plug-in performance improved via asynchronous initialization
  • Changed - Smoother animation and scrolling (Mac OS X)
  • Changed - Performance of displaying dashed lines is improved (Mac OS X) Bug 1123019)
  • Changed -Disable use of RC4 except for temporarily whitelisted hosts


  • HTML5 - Added support for CSS Scroll Snap Points
  • HTML5 - List-style-type now accepts a string value
  • HTML5 - Cascading of CSS transitions and animations now matches the current spec
  • HTML5 - Implement <link rel="preconnect">
  • HTML5 - Enable the Fetch API for network requests from dedicated, shared and service workers
  • Developer - Drag and drop enabled for nodes in Inspector markup view
  • Developer - - Webconsole input history persists even after closing the toolbox
  • Developer

    Cubic bezier tooltip now shows a gallery of timing-function presets for use with CSS animations

  • Developer - localhost is now available offline for WebSocket connections
  • Fixed - Improve performance for IPv6 fallback to IPv4
  • Fixed - The Security state indicator on a page now correctly ignores loads caused by previous pages
  • Fixed - Fix incomplete downloads being marked as complete by detecting broken HTTP1.1 transfers
  • Fixed - Fixed an issue where a Hello conversation window would sometimes fail to open
Known Issues

Download - All systems & languages

#4 Chachazz


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Posted 03 July 2015 - 10:35 AM

Firefox 40.0 beta
first offered to Beta channel users on July 3, 2015
Whats New


  • New - Support for Windows 10 including tablet mode
  • New - Download protection from potentially unwanted software
  • New - Suggested Tiles show sites that may be of interest, based on categories from your recent browsing history
  • New - Add URLs to a Hello conversation for additional context
  • New - New style for add-on manager based on the in-content preferences style
  • New - Improved scrolling, graphics, and video playback performance with off main thread compositing (GNU/Linux)
  • New - Smoother and more reliable CSS animations via asynchronous animations
  • Changed - Add-on extensions that are not signed by Mozilla will  display a warning
  • Changed - JPEG images use less memory when scaled and can be painted faster


  • HTML5 - Support for new Unicode 8.0 skin tone emoji
  • HTML5 - IndexedDB transactions are now non-durable by default
  • HTML5 - Implemented AudioBufferSourceNode.detune to modulate playback rate in cents
  • New - Improved Performance tools in the developer tools
  • Developer - New rules view tooltip to tweak CSS Filter values
  • Developer - New page ruler highlighting tool that displays lightweight horizontal and vertical rules on a page
  • Developer - Console API messages from SharedWorker and ServiceWorker are now displayed in web console
  • Developer - Inspector now searches across all content frames in a page
  • Developer - Places Keywords API has been deprecated. Read more about the new Asynchronous Keywords API
  • Developer - Removed support for binary XPCOM components in extensions. The addon SDK "system/child_process" pipe mechanism for native binaries should be used instead.
  • Fixed - Kannada text does not display properly in built-in pdf viewer

Download (32-bit & 64-bit)  - All systems & languages

Firefox 40b1 - https://ftp.mozilla....eleases/40.0b1/