As of Friday April 14th Autodesk DWG Trueview 2007 was available for download.
The Documentation states...
DWG TrueView™ software is a free, downloadable product used to accurately view, plot, and publish authentic DWG™ files. Easily share AutoCAD® drawings among engineers and architects, view and plot DWG™ and DXF™ files, and then publish them as DWF™ files for quick and easy review by extended team members. DWG TrueView 2007 has new UI improvements and supports the latest DWG file format, DWF viewing installation, and 3D DWF publish.
This is the second 2007 based freely download-able utility (the first was DWG TrueConvert).
Click on the title of this post to get to the download page.
By the way, Civil 3D 2007 should begin arriving this Friday (April 21, 2006).