Scan2CAD v10 was released in July 2018. You can read more about the release here.
By default, when ordering a Scan2CAD subscription your license will always be for the latest release (Scan2CAD v10 or higher).
The interface of Scan2CAD was totally redesigned in v10. Some users who have used the software for previous years may wish to stick with the older interface, in these cases you can contact us after ordering requesting to exchange your license for a v9 license. We will be happy to help.