December 13th 2006
By Mike Flaminio
Mozilla Foundation has released Thunderbird 2.0b1. The open-source group's highly-capable email client is now said to feature:
New visual theme
Session history navigation
Improved support for extensions
As is / was the case with the Firefox 2 transition, extensions will be broken and / or unavailable for this new version of Thunderbird. Thereupon, if you rely on extensions this for "testing purposes only" edition of the open-source mail client isn't for you.
For everyone else, get your copy of Thurnderbird 2.0b1 now.
Check out Wired's short n' sweet first look at this release.