Stories about: Mozilla Thunderbird  

“X” button closes only one window instead of the entire client

On Windows, tabs are now available in the title bar

Box.com added to the list of online storage services

Integrates Chat module with unified global search

Problem with YouSendIt file link expiration is eliminated

It partners up with services for custom email addresses and larger attachments

It fixes IMAP hanging and renaming folders used by filters

No more development for old Mozilla Thunderbird builds

Built-in Web search capability, improved mail search

A new Earlybird release is also available for download

Improved support for Personas, runs on Gecko 9 engine

It is really a beta release, some features might not work

Integrated add-ons to boost functionality and productivity

Security and performance improvements certain to occur

Third party add-ons disabled by default, just like in Firefox 7