Firefox Beta Notes

Version 38.0beta, first offered to Beta channel users on April 1, 2015

Check out "What’s New" and "Known Issues" for this version of Firefox below. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla. If interested, please see the complete list of changes in this release.

What’s New

  • New

    Improved user interfaces:

    • New "Welcome Screen"
    • Reader View controls (on Tablets and Phones)
    • "Synced Tabs" panel new layout (on Tablets)
    • "Add to Firefox" feature (from outside Firefox)
  • New

    Ruby annotation support

  • New

    Support for the Android L theme

  • New

    Send a tab to another connected device with the 'Send to device' option in the "share" menu

  • New

    Add a website to your Reading List with the "Add to Reading List" button in the overflow menu

  • New

    Locale added: Azerbaijani (az)

  • Changed

    autocomplete=off is no longer supported for username/password fields

  • Changed

    RegExp.prototype.source now returns "(?:)" instead of the empty string for empty regular expressions

  • Changed

    Improved page load times via speculative connection warmup

  • HTML5

    WebSocket now available in Web Workers

  • HTML5

    BroadcastChannel API implemented

  • HTML5

    Implemented srcset attribute and <picture> element for responsive images

  • HTML5

    Implemented DOM3 Events KeyboardEvent.code

  • Developer

    WebRTC now has multistream and renegotiation support