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ThunderbirdThunderbird Beta
Release Notes

v.13.0b1, released: April 27, 2012

Check out what’s new and known issues for this version of Thunderbird 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
    Filelink: Send links rather than attachments and prevent bounce back due to large attachments.
  • CHANGED
    The minimum system requirements for Windows are now Windows XP Service Pack 2 or later.

Known Issues

  • Unresolved
    If you are unable to view content for your RSS feeds in the Wide View Layout, you may need to disable the Lightning Calendar add-on if you have it installed or switch to Classic View and restart Thunderbird. (see 531397)