Curio 7 should notice this update is available automatically, or you can choose Curio > Check For Updates from within the application to force a check.
One of the new features is a basic mmap (Mindjet MindManager) importer. Just drop an mmap file on an idea space and we can convert it to a native Curio mind map. Currently we're only supporting text and note elements but more can be supported in the future based on your feedback (flags? dates? checkboxes? priorities? other meta?).
Enjoy!