Thunderbird 3.0 Release Candidate Ready for Download
Just last month, Mozilla announced it would keep its Thunderbird 3.0 email client in Alpha form because "calling something a beta is likely to trigger a bunch of extra press attention we're not yet in a position to deal with." Well, Mozilla's now ready and has pushed its email client into Release Candidate status.
The RC is a public preview and intended for developer testing and community feedback, Mozilla says. Mozilla added that it's looking specifically for feedback on the client's new search tools, tabbed email, message archiving, new mail account setup wizard, and improvements for developers.
There are quite a few changes Mozilla made to the new email client, all of which are outlined in the Release Notes here. Be sure to give it a glance before grabbing the download here.

Image Credit: Mozilla