Mozilla Firebird 0.6.1 has been released. People who have been staying away because of the auto-complete crash bug, or have been annoyed like I was (but still stuck to Firebird for it's redeeming qualities) will be pleased to know that bug has been eliminated.
Other than that, the other bug-fix of note is a fix for the DOM security restriction bug which broke certain bookmarklets. And there's a snazzy new icon too. This is after all a maintenance, bug-fix release - the next major release, 0.7, will be out in the time of Mozilla 1.5 final's release date, and will feature upgrades to the download and password manager systems.
Note: If you'd bookmarked the Firebird website as http://www.mozilla.org/projects/firebird/, it seems to be time to update it. The 'front' page is http://www.mozilla.org/products/firebird/, and that old page is now intended as a developer resource.