Note that this is the bèta version you're looking at.
If you want to download the bèta: Before downloading: make backups of your projects (save as new vtp file, or even better Export } Backup project with media). Then save it again on a new filename and call it projectname_beta. Because if you open a project you're working on for a client or whatever and you want to get back to the stable 3DVista version, it's not possible if you've opened with the beta version. Now you've created your backups, you can download it here: https://blog.3dvista.com/2018/07/06/new-beta-manual-download-required/