What You Need to Know About Internet Explorer 9 RC? The answer is in the Internet Explorer RC Product Guide. 108 pages that describes new features in Internet Explorer 9, highlighting the top features, and provides additional information about features specific for end users, developers, and IT professionals.

New features availble about security updates and how to reduce malware and infections from socially engineered malware.

Available PDF (29.0MB) and XPS (9.0MB) files.

Link :  Internet Explorer 9 Release Candidate Product Guide   (Microsoft Dwonload Center)