Hello all! In this article, I would like to inform you about new mozilla firefox 4.0 mockups interface. It is really beautiful. These mockups remove menubar and make it more simpler and minimalist. You can see two alternatives of the tab location, up or bottom. The progress line is also beautiful, it is located at bottom of your location bar. Here are some screenshoot of mozilla firefox 4 mockups.
Mozilla 4 Mockups - Tabs at Bottom
Mozilla 4 Mockups - Tabs at Top
The Mozilla team also proposed for the design go/stop/refresh button. It is attached at the end of the location bar. It is only one button and can change based on your action. Mozilla Team says that this one button
* Turns green when you start typing.
* Blends with the location bar when at rest.
* Turns blue on hover.
* Turns red when a page is loading.
Mozilla 4 Mockups - Go/Stop/Refresh Button
In my opinion, this new interface is really awesome, very beautiful when it runs on windows vista with its aero glass turned on. 
