All,
The new build on the download page (http://revit.autodesk.com/download.asp) has been placed to support the AutoCAD Revit Series release 2 (ARS2).
For consistency, a new non-bundled version of Revit was also posted with the same build number, 20040420_2101.
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Regards,
Steve Burri
Autodesk, Inc.
Product Support Manager - Building Solutions Division