This release, called Shredder Alpha 3 to emphasize its early nature and
the need for caution, is available for testers, extension developers,
and other people who are curious to follow the development of the next
release of Thunderbird.
Shredder Alpha 3 includes initial versions of new features that build on
the current release, Thunderbird 2. See the release page at
http://www.mozillamessaging.com/en-US/thunderbird/3.0a3/ for more
details. We expect to release further interim releases as we work
towards a major new release of Thunderbird.
Please read the release notes at
http://www.mozillamessaging.com/en-US/thunderbird/3.0a3/releasenotes/
for more details.