I take the opportunity here to provide as much information as I possibly can, as some of you raised doubts and concerns about he future of osgART.
osgART 1.1 is exclusively been distributed as a commercial product by ARToolworks, there will be no community source available. You need to contact ARToolworks for more information.
The Human Interface Technology Laboratory New Zealand (HITLabNZ - http://www.hitlabnz.org
) is actively working on osgART 2.x under a GPL license. osgART 2.x will be API incompatible with 1.1 and will shift to a new development paradigm, emphasizing the conceptual connection between Augmented and Mixed Reality and fine grain control of tracking parameters. As of now osgART 2.x will only work with OpenSceneGraph 2.4 or higher. And yes, we will have a community source code repository.