Hi Andrew,
yes, course formats are supported. You should check the step by step example in this guide:
https://docs.moodle.org/dev/Mobile_support_for_plugins#Step_by_step_example
The example is for a course activity, but the process is similar for course formats.
Mark Johnson from the Open University has worked on this, but I'm not sure if his work was published or not.
Cheers,
Dani