Just Released September 11th Thunderbird 15.0.1 Coming Soon October 9th Thunderbird ESR 10.0.8 Thunderbird 16 Thunderbird 17 Beta (17.0b1)* Thunderbird 18 Earlybird (18.0a2)* Future Releases November 20th Thunderbird ESR 10.0.9 Thunderbird ESR 17.0 Thunderbird 17 Thunderbird 18 Beta (18.0b1)* Thunderbird 19 Earlybird (19.0a2)* * 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.
Thunderbird 17
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Just Released None Coming Soon August 28th Thunderbird ESR 10.0.7 Thunderbird 15 Thunderbird 16 Beta (16.0b1)* Thunderbird 17 Earlybird (17.0a2)* Future Releases October 9th Thunderbird ESR 10.0.8 Thunderbird 16 Thunderbird 17 Beta (17.0b1)* Thunderbird 18 Earlybird (18.0a2)* November 20th Thunderbird ESR 10.0.9 Thunderbird ESR 17.0 Thunderbird 17 Thunderbird 18 Beta (18.0b1)* Thunderbird 19 Earlybird (19.0a2)* * 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.