These features are primarily divided into three major categories, viz., Fast, Clean and Trusted. Internet Explorer 9 adds many major features and includes many enhancements. You can download final stable version of IE9 from the official IE site,. The build number indicates that IE9 is compiled, finalized and signed off on March 8, 2011. The RTW ( Release to Web) version of IE9 is the final and stable RTM version, build.
Internet Explorer 9 (IE9) has finally been officially released by Microsoft as scheduled beforehand.