Thunderbird Beta v.5.0, released: June 2, 2011

The latest version of Thunderbird Beta has the following changes:

  • New Addons Manager and extension management API (user interface will be changed before final release)
  • Tabs can now be reordered and dragged to different windows
  • Revised account creation wizard, offering improved set-up
  • Attachment sizes now displayed along with attachments
  • New troubleshooting information page to aid supporting and diagnosing problems in Thunderbird
  • Plugins can now be loaded in RSS feeds by default
  • Various other user interface fixes and improvements
  • Support for Mac 32/64 bit Universal builds (Thunderbird Beta will no longer support PowerPC on Mac)
  • and numerous other bug fixes

Thunderbird Beta is a preview release for the next major version of Thunderbird. It is being made available for testing purposes only.
Download Thunderbird beta:

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