Like mentioned in other threads, there are many other ways of communication (and usually with much faster responds than) email. I admit I am still old fashioned.
Perhaps, the demotion of Thunderbird is Mozilla's overall plan to focus on Firefox OS. It is easily understandable that Mozilla wants to compete against iOS since Mozilla does not really like Apple. As for competing against Google's Android, it's a bit tricky since after all, Google is believed to be Mozilla's major financial source with the amount refused to be disclosed by the open-source group.
Mozilla has a proposal on the new Thunderbird: https://wiki.mozilla.org/Thunderbird/Pr ... ance_Model
The two versions are Thunderbird ESR and (vanilla) Thunderbird.
Thunderbird ESR will receive an update every 42 weeks with life time of 54 weeks. While the other Thunderbird will be updated every 6 weeks (like Firefox).
The every-six week release of Thunderbird will be focused on security and stability. Unlike Firefox, there's no mention of something “awesomeness
”, “more awesomeness
”, and “even more awesomeness
” and so on... (as promised
for Firefox almost an year ago) on every six-week release of Thunderbird.
UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:13.0) Gecko/20100101 Firefox/13.0.1 AlexaToolbar/alxf-2.15