Finally, Autodesk have made a 64bit versions of Revit Architecture, Structure and MEP 2009 available for download. Details were announced today in a formal Autodesk press release.
http://pressreleases.autodesk.com/index.php?s=press_releases&item=472%3C%2Ftd%3E
This will alleviate the RAM limitations that Revit has suffered from in recent years, especially with large projects. This is a significant move forward and will accelerate Revit as the BIM platform of choice.
