Stephen Horlander, Product Visual Designer at Mozilla has posted some updated UI concepts for the upcoming Firefox 4.0 on his blog. This isn’t the first time that we’ve seen concept screenshots from Mozilla for Firefox 4.0. They’ve been working hard on redesigning the UI, ever since Google Chrome changed the game for browsers....

Firefox has the worst UI amongst all the popular browsers. Almost all other browsers ( IE, Chrome, Safari ) have a new and better UI along with some sort of Windows 7 integration ( Aero Glass, jumplists, Aero Peek, thumbnail previews etc ), where as Firefox has none. The UI is still stuck in the Windows XP era. Mozilla has plans to change...

A few day ago, Firefox 3.7 mockups were discovered which made good use of Aero Glass available in Windows Vista and 7. Now, mockups for Firefox 4.0 have surfaced on the Mozilla Wiki which aren’t too different than the previous ones, but show some interesting new additions to the UI. Two versions are proposed, the conventional Tabs on bottom,...