NavisWorks support for AutoCAD 2007 and 3D DWF

I've tried using the release candidate of NavisWorks JetStream v5.1 and I've especially looked at the AutoCAD 2007, it's new DWG format and 3D DWF support that seems to work really good. (Now we just wait for AutoCAD to support xreffing of 3D DWF's. The image is showing a sample 3D model imported to NavisWorks from the DWG, DXF and 3DS formats. I've then exported it to a 3D DWF as seen in the Autodesk DWF Viewer.
The key features covered in this release are:

AutoCAD 2007 (including AutoCAD 2007-based products; ADT, ABS et al) file reader and exporter

Viz 2007 exporter

Revit Building 9 / Revit Structures 3 / Revit Systems exporter

3D DWF Reader

3D DWF Output

KML (Google Earth) Output

Sketchup SKP Reader

Triforma materials support

IFC improvements, including hierarchy support, improved faceting and increased reliability and fidelity

Presenter now handles the creation of even larger photorealistic images from even larger models

Localisation for German, Japanese, Chinese (simplified), French (GUI only)

Greatly improved search performance (affects use of search sets, find tool, and selection tree properties tab)

API access to JPG and PNG printer settings

API access to Search Set folders

API ability to find out the version of NavisWorks/JetStream used to create a particular NWC, NWD or NWF