This is either 2.1 release as they claim on their site, or 2.1 beta as they claim on another spot. I certainly can't tell. The plugin's 'about' shows 2.0.78 but it comes with 2.1 sample files. Go figure... Details on this modelling tool at its site: http://www.hard-mesh.com/ No changelog I could find on its site or the installation. Modelling is over my head so just a ready-made v2.1 sample scene.