Thunderbird 3.0 beta 4! Blake Winton 2009-09-23 15:21 I’ve been doing a lot of work recently, in preparation for the next (and last!) beta of Thunderbird 3, and I’m happy to announce that it was released yesterday! The reviews from LifeHacker and Ars Technica have been positive, which is always gratifying to see on something you’ve spent a lot of time on. For more information, check out the Thunderbird 3 for Users page, or the Release Notes for beta 4.