Latest Firefox 3.7 pre-alpha adds built-in Aero glass support
You can see the change from 3.7 Alpha 2 (top) to 3.7a4pre (bottom). As you can see, it's no longer just the title bar and window border -- Firefox's main, navigation, and bookmarks menus are now all glassed-out.
From what we've seen in our comments previously, not all of you are going to be excited about all-over transparency. While I haven't found an about:config value yet to disable the glass effect, I don't doubt that one exists (or will be added before 3.7 is complete).
Despite earlier rumors, a Firefox 3.7 release is still part of Mozilla's plans -- we ought to see it sometime in May or June of this year.
Want to take the latest nightly build of Firefox 3.7 for a spin? Download it from Mozilla and share your thoughts in the comments!