Mozilla Firefox 3.1 is ready for download. This version has some nice new features, the new uber-fast JS engine, the detachable tabs (yay, finally!) and a porn private browsing mode (whohooooo!!!!) and special syntax for the awesomebar (ie: '+' will restrict to only tagged pages).
It is still a beta of course, and most plugins won't work with it, however, it's still worth a look if you're not super dependent on your plugins.