Not aware of any way to do that - would be nice.
A workaround might be to actually name the files or add a description that instructs users to check the current template version and use the latest when needed. Big maint hassle. To facilitate, we created a query builder report listing all Document templates with their versions and made it available from within all Projects. No easy way that I know to confirm what version the doc files are in the project template except to embed in their name.