- Thunderbird is based on the new Mozilla Gecko 6 engine
- Several theme improvements for Windows 7
- Support for Windows 7 Jump lists
- Several fixes when importing email from Microsoft Outlook
- Default mail client check now works with newer Linux distributions
- Various other user interface fixes and improvements
- Numerous platform fixes that improve speed, performance, stability and security
Installing Thunderbird 6.0 on Ubuntu/Linux Mint via PPA repo
The latest version of Thunderbird has the following changes: