Nightly builds from the comm-central trunk
The trunk is the central source code that is used for continuous and ongoing development. Trunk builds contain the very latest bleeding-edge changes and updates. The trunk currently refers to Thunderbird built with Gecko 1.9.3. These are called Thunderbird 3.1* builds and are maintained to ensure that Thunderbird does not drift too far from the Gecko 1.9.3 development. The vast majority of the front-end Thunderbird code is currently the same as for the Thunderbird 3.0* series.
Latest English trunk builds are available at: http://ftp.mozilla.org/pub/thunderbird/nightly/latest-comm-central/
Latest localized trunk builds are available at: