We do not provide a native dimension retrieving the tag version in our solution. You may retrieve the version in a custom site variable if you wish to display that information in your analyses. To do so, you could create a Data Manager variable in order to retrieve the value of the vtag hit parameter and map it to a site custom variable.
You can also do a tagging control of your site (with Tag Inspector) and of your application to obtain the tag version, without storing it.
