Just Released January 31st Thunderbird 3.1.18 Thunderbird 10.0 Thunderbird 10.0.0 ESR February 3rd Thunderbird 11 Beta (11.0b1)* Thunderbird 12 Earlybird (12.0a2) Coming Soon March 13th Thunderbird 3.1.19 Thunderbird ESR 10.0.1 Thunderbird 11 Final Release Thunderbird 12 Beta (12.0b1)* Thunderbird 13 Earlybird (13.0a2)* Future Releases April 24th Thunderbird 3.1.20 *LAST RELEASE ON 3.1.x BRANCH* Thunderbird ESR 10.0.2 Thunderbird 12 Final Thunderbird 13 Beta (12.0b1)* Thunderbird 14 Earlybird (13.0a2)* * As part of the new Rapid Release Schedule,dates listed for Earlybird and Beta builds reflect when the code merge is set to begin. The actual release to that particular channel may vary…
Thunderbird 12
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Mozilla Messaging has completed the merge of Thunderbird 12 to the Early Bird developmental channel. Existing Earlybird user may be able to update within the application via Help > About Earlybird (at press time the updater was not working) otherwise you can manually download and install Earlybird from here. Thunderbird 12 is scheduled for release on April 23, 2012. Lightning Users: You will need to manually update to Lightning 1.4b1 via the Calendar Versions site.
Just Released None Coming Soon January 31st, 2012 Thunderbird 3.1.18 Thunderbird 10.0 Thunderbird 11 Beta (11.0b1)* Thunderbird 12 Earlybird (12.0a2)* Future Releases March 13th, 2012 Thunderbird 3.1.19 Thunderbird 11 Final Release Thunderbird 12 Beta (12.0b1)* Thunderbird 13 Earlybird (13.0a2)* * As part of the new Rapid Release Schedule,dates listed for Earlybird and Beta builds reflect when the code merge is set to begin. The actual release to that particular channel may vary by several days. See the Wiki for more details.
It has only taken Mozilla 8 (well, no 7 as there was no Thunderbird 5) Thunderbird releases to catch up with the UI change made in Firefox 4. The Daily builds of Thunderbird 12 now have the tab bar at the top of the window. Presently though, there is not an option not to have the tabs on top. Thunderbird 12 is schedule for release on April 24, 2012.
Just Released December 20th Thunderbird 3.1.17 Thunderbird 9.0 December 23rd Thunderbird 9.0.1 Thunderbird 10 Beta (10.0b1) Thunderbird 11 Earlybird (11.0a2) Coming Soon January 31st, 2012 Thunderbird 3.1.18 Thunderbird 10 Final Release Thunderbird 11 Beta (11.0b1)* Thunderbird 12 Earlybird (12.0a2)* Future Releases March 13th, 2012 Thunderbird 3.1.19 Thunderbird 11 Final Release Thunderbird 12 Beta (12.0b1)* Thunderbird 13 Earlybird (13.0a2)* * As part of the new Rapid Release Schedule,dates listed for Earlybird and Beta builds reflect when the code merge is set to begin. The actual release to that particular channel may vary by several days. See the Wiki for more details.