Mozilla folks released some interface designs for the upcoming release Firefox 4. One of the mockup design looks a lot like the Google Chrome browser with the tabs-on-top interface.
File menu on top of the browser is also gone, IE has long removed the file menu on top and Google Chrome also doesn’t have this. I don’t know how many of you use the File menu unless you want to print a page for that you could use “Ctrl+P” shortcut.
Another change is that Stop, Refresh and Go buttons are clubbed together to save some space.
These are just mockups for the Firefox 4, so you may or may not see all these changes in Firefox 4 when they release it.