I previously posted about the i-model plugin for Revit here which ultimately allows you to export from Revit to the Bentley i-model format, and then subsequently Export to a 3D PDF file.
A couple of days ago, Bentley released version 01.00.01.51 of the i-model plug-in for Adobe Reader.
This allows you to:
- View/interact with i-models using free Adobe software
- Pan, zoom, rotate, and search embedded i-models
This presents a possible solution for Revit to actually produce 3D PDF files that have legitimate BIM intelligence, through the Bentley i-model plugin for Revit.
FTP download link for Adobe Reader plugin