The Firefox UX team has been working the past few months on mockups of
a new theme:
https://wiki.mozilla.org/Firefox/Projects/3.7_and_4.0_Theme_and_UI_Re...
http://stephenhorlander.com/
Now that we are starting to implement the theme I've been going
through the design mockups to find any cases where we need to add
additional functionality to our platform:
https://bugzilla.mozilla.org/showdependencytree.cgi?id=546831&hide_re...
If anyone is looking for really high value contributions, that list of
bugs is super important to us (after all without these changes all we
have are pretty mockups :)
Since we don't really have a release determined for the new theme, we
can't really set these to block any release in particular yet.
However all of these platform requirements could be considered
"blocking the theme," which is the purpose of the meta tracking bug
546831
-Alex