From around the time of the Thunderbird 3 release, Thunderbird’s trunk nightly builds were code-named Shredder. Following the switch to the rapid release cycle, we’ve now changed these to be code-named Daily.
They’ve got a shiny new logo to go with them as well, which completes the set for our rapid releases:
This change will take place from the next round of nightly builds. You’ll be able to obtain them here (Localised). If you want the slightly more stable builds of Earlybird or Beta, then check out our channels page.