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Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.
40.0a2
Firefox for Android Aurora
May 15, 2015
Version 40.0a2, first offered to Aurora channel users on May 15, 2015
New
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Support for Android Presentation API for screen casting
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Added protection against unwanted software downloads
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Long press on back/forward navigation buttons in app menu to bring up history list
Changed
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JPEG images use less memory when scaled and can be painted faster
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Support for running animations of 'transform' and 'opacity' on the compositor thread
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Sub-resources can no longer request HTTP authentication, thus protecting users from inadvertently disclosing login data
Developer
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Removed support for binary XPCOM components in extensions, use addon SDK "system/child_process" pipe mechanism for native binaries instead
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Open links from Android applications in the same tab via EXTRA_APPLICATION_ID
Web Platform
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IndexedDB transactions are now non-durable by default
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Implemented AudioBufferSourceNode.detune to modulate playback rate in cents, a logarithmic unit of measure used for
musical intervals
