Along with the new Firefox 9.0 release, Mozilla has also released version 9.0 of its Thunderbird E-mail client, for Mac OS X, Windows, and Linux. The new version includes the same updated Gecko rendering engine as Firefox 9.0, and also incorporates a number of changes, including:
- New opt-in system for users to send performance and usability data back to Mozilla to improve future versions of Thunderbird (A similar facility has been included in Firefox since earlier this year.)
- Additional support for Personas in the compose and address book windows
- Better keyboard handling for attachments
- Several user interface fixes and improvements
You can obtain the new version via the built-in update mechanism, or you can download a complete installation package, in a variety of (human) languages.