* [http://planet.mozilla.org Planet Mozilla] Might be worth a read.
* [http://planet.mozillamessagingmozilla.com org/thunderbird/ Planet Mozilla MessagingThunderbird] Thunderbird team's various blogs. Links to Thunderbird staff and contributor blogs can be found in the right sidebar of the home page if you want to avoid the planet "firehose"!
If you want to know more about the product currently under development