8 Million plus downloads in just 24 hours and as the tagline puts it will change the way you use the web, which has been for me – a (very) satisfied Mozilla Firefox [download here] user since its introduction in 2004.
Significant changes in version 3: Cairo used as a graphics backend. Cocoa Widgets included in OS X builds. APIs implemented from WHATWG specs. Changes to how DOM events are dispatched, how HTML object elements are loaded, and how web pages are rendered. New SVG elements and filters, and improved SVG specification compliance. Acid2 test compliant. New UI improvements, including default themes for different operating systems and new download manager. Windows 95, 98, ME, Mac OS X v10.3.9 and lower, and GTK+ 2.8 and lower are no longer supported. Addons.mozilla.org integration in the Add-ons window. Support for APNG files. Wikipedia