The Firefox User Experience Team
has published a video
explaining why Firefox 4 will have tabs positioned above
the location bar by default (it will be a choice, you can switch to the more common position below the location bar). Like me, when I first noticed aspects of the Firefox 4 UI becoming available, you probably noticed similarities between Firefox 4 and Chrome. They are pretty clear and I wouldn’t be surprised if the Firefox UX Team was influenced by Chrome when they designed Firefox 4. That said, this video raises a couple interesting points that didn’t occur to me previously.