Vizard 4.0 and OSG 2.x?

[dtidrow]

Will a future version of Vizard (4.0, perhaps) use a newer version of OpenSceneGraph? If so, any estimates on when it will be available and which version of OSG will it use?

In particular, I'm interested in using OcclusionQueryNode, as some of our projects use densely-tessellated CAD models that slow our machine (dual Quadro 4500's, to a crawl. In the meantime, I'm also exploring using OccluderNode's in our models, as I know that OSG-1.2 supports them. Has anyone tried using OccluderNodes in Vizard before? Any thoughts on how many you can add before they become the limiting factor?