As part of Mozilla’s new rapid release development process, the Beta development channel and the Earlybird channel have been updated with the latest versions. For information about Thunderbird Beta and Earlybird please visit:
- Download Thunderbird Beta or Earlybird: http://www.mozilla.org/thunderbird/channel/
- Release Notes: http://www.mozilla.org/thunderbird/10.0beta/releasenotes/
For desktop users, if you previously installed a beta or Earlybird version of Thunderbird you will receive an automated update notification within 24 to 48 hours.