We are now in the process of landing a few refreshed icons for the Firefox 3.5 themes. Across all 4 platforms roughly 25 of the icons are either being tweaked or are entirely new (there were some last minute feature additions, like geolocation). Here are a few highlights of things that either just landed, or are coming soon to your very own nightly build:
Windows: All Secondary Glyphs in the Main Window
On Windows (both Vista and XP) we are replacing all of the secondary glyphs in the main window (various small arrows, new tab +, etc) with a consistent etched-in appearance. These etched in glyphs also feature a glowing hit state, which varies color by platform. These glyphs, as well as all of our Windows icons, were created by the Iconfactory.
OS X: Removing Background Etch From the Keyhole
We are also considering doing this on Windows, since it lightens and simplifies the appearance of our UI. Either way, we wanted to get the change landed on OS X, since a lot of people were eager to see the etch go (including myself, as it was my misguided idea in the first place). Visual design of the OS X theme is contributed by Stephen Horlander. Our file system icons on OS X were made by Sofa.
Linux: Last Minute Plugin Icons (used in the event of plugin block-listing)
These particular icons were designed by Jakub Steiner (as a very last minute refresh, sorry about that Jakub!). The visual design of the Linux theme is contributed by the Tango team (always friendly, and occasionally featuring overnight delivery :)
As a side note for Linux, can anyone point me in the right direction for contacting the team that works on the default Gnome OS themes? Basically all of our remaining polish points on Linux (related to icons) are things that we would need to improve at the level of the OS themes, like icons not being provided at the right size, and a lack of uniformity with the visual size of some glyph icons. These are things we are eager to get figured out, but right now our teams (and our instances of bugzilla) aren’t really in contact.