This Could Be Firefox's New Design
Changes that are made to a web browser that you are using on a daily basis can have a devastating effect. We have seen this happen several times in the past when Mozilla made changes to the design of the Firefox web browser. Especially the move from Firefox 3 to 4 caused an uproar, with part of the userbase still rejecting to update to any version beyond Firefox 3.
Probably the two biggest changes in recent times where the removal of the status bar, and its replacement with the add-on bar, and the new Firefox single button menu that replaced the standard menu of the browser.
New mockups posted on the Mozilla Wiki website show how Firefox could once again receive a visual overhaul, which in turn could again alienate part of the browser’s user base. It needs to be noted that mockups are not final designs, and that nothing is set into stone just yet.