Just Released

March 14th

• Thunderbird 3.1.20
• Thunderbird ESR 10.0.3
• Thunderbird 11.0.0

March 15th

• Thunderbird 12 Beta (12.0b1)*
• Thunderbird 13 Earlybird (13.0a2)*

Coming Soon

April 24th

• Thunderbird 3.1.21 *LAST RELEASE ON 3.1.x BRANCH*
• Thunderbird ESR 10.0.4
• Thunderbird 12 Final
• Thunderbird 13 Beta (12.0b1)*
• Thunderbird 14 Earlybird (13.0a2)*

Future Releases

June 5th

• Thunderbird ESR 10.0.5
• Thunderbird 13 Final
• Thunderbird 14 Beta (14.0b1)*
• Thunderbird 15 Earlybird (15.0a2)*

* 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.