Apparently, Mozilla Messaging had released Thunderbird 3 beta 3 back on July 21st. Usually, there is plenty of news about Thunderbird 3 developmental releases, however for reasons unknown there was no post on David Ascher’s Blog. Even odder was with this week’s Mozilla Project Status Meeting for Thunderbird 3 was no report. It was not until this week’s issue of about:mozilla was published did I learn that Thunderbird 3 Beta 3 had shipped and that it had done so the week prior.

Thunderbird 3 Beta 3 is now available for download. This milestone is focused on testing the core functionality of the new features and platform changes that will be included in Thunderbird 3. This release includes a number of changes:

• improved tab functionality
• a new message pane summary view
• Smart Folders
• better Gmail support
• and more

Source: about:mozilla