Damn but I love the amount of extra space they gave us. It’s reminiscent of Google Chrome, but I like the fact that they went for a more square design rather than Chrome’s trapezium-shaped tabs. This looks much more official and serious.
In the past 2 hours that I’ve used this new beta, I’ve already discovered something that I don’t like. While the overall look and feel is fantastic, I’m not happy with the fact that they hid the Menu bar by default. I’ve lost my Chatzilla function, which I used to click on Tools > Chatzilla. Now I need to unhide the Menu Bar, click on Tools > Chatzilla. It’s an additional step taken which I am not very fond of.
Still I like what they did with the add-ons menu. And it looks pretty on Windows 7. We’ll see how things go.
Edit: To access information about the User Studies, click on Feedback > All Your User Studies > Finished Studies. Select any of the More Info links and they’ll take you to a page with more information about that particular study. The dead links are found here, because they link to .html instead of .php so have reported it to Bugzilla. I hope someone fixes it soon!