While using the latest Firefox Nightly build I noticed that they no longer have the Extensions Manager, it is now the Add-ons Manager. It is not that much different except that the Themes is now built into the Add-ons Manager instead of having separate managers for both themes and extensions. They have also moved the uninstall button into a more convenient location.
I am sure this is part of Mozilla’s effort to bring a visual refresh to Firefox and help people forget that they pulled Places out of Firefox 2. I can’t wait to see what the rest of the visual refresh will look like!
NOTE: The download file below is for a nightly build of Firefox. Nightly builds are known to be very unstable and you should only download it after backing up your current installation.