Firefox 3 for Developers
Even though Firefox 3 is only in early alpha, you can still see a list of new features available to web and extension developers. The list will be updated as development continues.
Jesse Ruderman also has a nice changelog with links to bugzilla, for those of you that want all the details.
Jonathan said,
January 23, 2007 @ 4:32 am
RGBA, sweet!
SVG foreignobject is still a bit borked on Windows tho.