Thunderbird 38 release expectations

Tanstaafl tanstaafl at
Tue May 5 10:44:07 UTC 2015

I for one would like to thank Kent and everyone else who is currently
working on Thunderbird. I admit I was a little worried when Mozilla
announced it was ceasing its active development support for TB, but I
actually feel like it is getting more and better attention now than it
was when it was fully under Mozilla's leadership/control.

Congrats! It looks like TB 38 will be the best release in a long time.


On 5/5/2015 12:56 AM, R Kent James <kent at> wrote:
> Thunderbird 38.0 will not ship on the same date as Firefox 38.0 but will 
> likely be delayed a couple of weeks.
> We are approaching the originally scheduled date of the release of 
> Thunderbird 38, which would be May 12 following the standard Mozilla 
> release calendar. But there are still a number of regressions that we 
> are working on, and last week's beta was the first beta that was feature 
> complete. That means we will not be ready to ship according to the 
> original schedule. A current estimate of when we will ship Thunderbird 
> 38.0 is approximately May 26.
> Until we are ready to ship a finished Thunderbird 38.0, we will continue 
> to ship betas of Thunderbird 38 to the beta channel.
> We'll do a new beta of Thunderbird 38.0 this week. At this point 
> mozilla-esr38 has diverged from mozilla-release, and it is mozilla-esr38 
> that is the correct channel for us to follow. So we will do future betas 
> of Thunderbird 38 from comm-esr38 and mozilla-esr38 (on branch 
> THUNDERBIRD_38_VERBRANCH) unless there are unforeseen technical issues.
> (Thunderbird 38.0 is a major release, that will be the successor to 
> Thunderbird 31 which is our current release).
> Kent James
> Chair, Thunderbird Council

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