Mozilla is working on their updates to Firefox. Fx 2.0.0.2 should be out by the end of the week if all goes well. And they are also planning Fx 1.5.0.10. I recommend that users upgrade to Firefox 2 to get the best experience possible.
Thunderbird 2 is on its way as well and I’ll keep you up to date on how that progress is going.
Firefox 3.0 with the new Gecko rendering engine should be out sometime late this year and hopefully we’ll see a huge leap in new features to distance itself from Firefox 2. I think Mozilla really wants to distance Firefox from IE7 as well because they know they can take advantage of the fact that they can update and patch Firefox much faster than Microsoft can to IE.