Developers making API changes to core components must now ensure that they do not break Mozilla Firebird, Mozilla Thunderbird and Camino. See Ben Goodger's, Scott MacGregor's and Mike Pinkerton's newsgroup posting for more details.
bugzilla.mozilla.org has been upgraded to a newer version. Regressions are being tracked in the regressions meta-bug. If you think you have found a regression, check the list of known regressions to see if yours has been filed already, then file it if not.
When starting the Mozilla Application Suite Mail & Newsgroups component or Mozilla Thunderbird in online mode, the user is now prompted to send any unsent messages (bug 232452).
A new string implementation is under development on the STRING_20040119_BRANCH.
The last traces of the PICS code have been removed from the CVS repository (bug 166192).
Camino now requires Mac OS X 10.1.5 or above (bug 184864).
The trunk is currently open (but check tinderbox for the latest status).