So Microsoft has stated that Internet Explorer 9, the first version of IE with wide support for HTML5 (including CSS3), will not be available on Windows XP. Given that Windows XP is still the dominant PC operating system, are web developers doomed to a prolonged future of supporting another inferior (in terms of supported features) yet stubborn browser. Does the fact that Microsoft will support XP until April of 2014 and will never support IE9 on XP mean that IE8 will be the dominant browser for the next three years?