This is an old revision of the document!
Finished in November 2009, accepted as public discussion paper by the OGC; soon available at the OGC web page:
Reference implementation scheduled for Q2 2010.
Removing all the styling aspects from the WVS specification and moving them to an an SLD profile for WVS. Changes resulting from discussions within the OGC 3DIM working group and and with industry.
When to reach an open standard for image-based 3D portrayal depends on discussions and acceptance.