Here's a peek at it from ZDNet.com.
it’s quite likely that I might consider making a switch to it as my main browser. While I find Internet Explorer 7 to be fine, I think that there would be advantages to switching to a unified browsing platform across Windows, Mac OS and Linux.
Yeah, I think you should work on that, buddy... 
Functionally and visually, beta 1 and beta 2 are hard to tell apart, but after a few seconds of using them side-by-side I think that I could tell them apart on pretty much any system. Beta 2 feels snappier and far more responsive than beta 1 (or Firefox 2.0 for that matter) and I can feel the difference on all the systems that I’ve tried it on - from a lowly Sempron system to my quad-core monsters.
Sounds like good progress to me!
I fight authority, authority always wins
Remembering Kay