You can add support for new schema.org types by overriding the schema markup output. Luckily, the Schema plugin has a filter to for that.
Here is an example of how to do so, simply add this code to your theme’s functions.php file:
You can add any type of schema.org, however… You will need to create additional callback functions for type properties.
Want more flexible solution?
Check out Schema Premium plugin. It allows you to use more schema.org types on your content and map preperities to custom fields.