Firefox is about to undergo some dramatic changes, according to Mozilla. Most notably, it sounds like future versions of Firefox will focus on firefoxesque features, such as Private Browsing Mode, and features that are unpolished or otherwise not very useful will be stripped out of the browser entirely. Furthermore, it looks like Mozilla is finally getting serious about moving Firefox away from XUL and XBL, though it isn't clear if they will be replaced with open Web technologies (HTML, CSS, JS) or native UI. In an e-mail to the firefox-dev mailing list, Dave Camp, Firefox's director of engineering, has outlined what he calls the Three Pillars of the new Firefox: Uncompromised Quality, Best Of The Web, and Uniquely Firefox.