I'm sure some of you have heard that Firefox 3.7 will do away with the address bar, which, to me, invokes images of IE 7. When Microsoft did that with IE and WMP it seemed foreign and strange, but 3-4 years later, here comes Mozilla with a similar design.
But that's not the end of it. Firefox 4 will look more like the Chrome of today than Firefox, save for the name.
Chrome or not, that screenshot looks sleek as hell. The link goes to Mozilla's wiki, where they show off what Firefox 4 looks like, and then they explain it. (They do say that they aren't trying to copy Chrome, farther down, but in doing so their explanation implies that Chrome was ahead of the curve and they're just now catching up.)
I'm excited about the design, but I don't think parts of it are right. My Firefox 3.6 UI is perfect for me. There's a little bit of wasted space but by the same token, it isn't cluttered. I like where they're going, but I'd love to sit down with some of the design geeks at Mozilla and show them my setup. I'm always tweaking it to best complement how I use the web. For example, my most recent change was to remove the Stop control (which, with Refresh, I'd moved to between the AwesomeBar and the Search bar) and add the fullscreen toggle to the right of the search bar. I'll post a screenshot later.
Also getting an update are notifications. (The link goes to a huge PNG on mozilla.com.) Basically the "bar" will be replaced by a speech bubble of sorts.
A lot of good insight into the next 18 months or so (hopefully less?) of Firefox design. Some good stuff to look forward to, but I'm sure I'll be tweaking it.
Looks like Personas didn't really pan out so well for them after all...