New user interface features added to latest Firefox 3 nightly build
The latest Firefox 3 nightly build includes a revised interface for the download manager, which features search functionality and grouping for active and completed downloads. Support for toolbar element resizing, native Vista menus, and an integrated Plugin manager have also been added.
The new "Plugins" category in the Add-ons manager allows users to see which plugins are installed (previously one had to navigate to about:plugins to do this) and it also makes it easy to toggle various plugins like the Flash player.
The revised download manager, which is loosely based on mockups that can be found at the Mozilla wiki, still has some rough edges.