It seems that Mozilla might be getting ready to give Firefox another facelift, as new mockups of potential design changes are posted on the Mozilla Wiki.
At the core of this possible redesign is removing the Firefox button that currently resides at the top-left of the browser and replaces it with a new menu panel. This panel is used to display commonly used features such as opening a new windows, printing, private browsing as well as offering access to the Options menu.
If you're a Google Chrome user then this might seem familiar to you, but there's a twist. Rather than the static menu panel of Chrome, Mozilla plans to give users the ability to customize the menu panel by rearranging the icons, and adding and removing new ones.
Users will also have the ability to add and remove items to and from the toolbar too.
Also, you may notice how themes are displayed in the customizations tab, allowing them to be applied directly to the browser.
Changes to the layout of a browser's user interface have the potential to upset a lot of people, as it can significantly impact workflow. Mozilla's user interface changes between Firefox 3 and 4 caused quite a controversy, with a significant percentage of the user base choosing to stick with Firefox 3. It remains to be seen what users will think of yet another user interface change being thrust upon them.