Mozilla released Firefox 3.5 on June 30. I was pleasantly surprised to see that most of my favorite extensions were automatically updated.
The only difficulties were with Tab mix plus, for which an update could not be found through the Mozilla site. However, development build 0.3.7.4pre.090516 is available from the Tab Mix Plus forum.
Redirect Remover is no longer supported, so I'll have to look for a replacement.
Google Notebook is another one I used but it is no longer supported by Google.
This was a smooth upgrade, especially with my extensions (compared to some other upgrades in the past). The existing configuration changes made with
about:config are respected. Unlike IE8, which restored some settings in order to be "helpful" (or just plain annoying in the belittling Microsoft way).
Computer World reported a record download of over 8 million in the first 24-hours.