AutoCAD® Revit® Architecture Suite software turns maximum flexibility into competitive advantage. Combining AutoCAD®, AutoCAD® Architecture, and Autodesk® Revit® Architecture software applications into a single, comprehensive suite allows you to
transition to building information modeling (BIM), while protecting your legacy software, training, and design data investments. Purpose-built for BIM, Autodesk Revit Architecture delivers a powerful competitive advantage by helping to speed creative design work, facilitate analysis for sustainable design, and automatically deliver coordinated, consistent documentation. Support ongoing work in either AutoCAD or AutoCAD Architecture while you make the switch to BIM with Autodesk Revit Architecture.
Autodesk® Revit® Architecture software helps architects and designers work naturally, design freely, and deliver projects efficiently. Purpose-built for building information modeling (BIM), Revit Architecture helps you explore design concepts and forms, and better maintain your design data through documentation and construction. With parametric change technology, any change you make is automatically updated throughout your project, keeping your design and documentation coordinated and more reliable. Share
essential BIM data with your partners for a more collaborative, integrated building design process. Support a more efficient design process that enables improved sustainable design analysis, clash detection, construction planning, and material fabrication.
Revit Architecture 2011 Feature Comparison Matrix 
Revit Architecture 2011 Brochure
More at www.autodesk.com/revit