Greetings, and thanks for asking the question. Yes, the framework we created for Inventor 2013 supports adding your own content. I am in the final stage of documenting the process and will post instructions here and in other places when it is complete. We also hope to publish instructions for offering free and purchased content on the App store.
You can add new video series that do not require model files (such as as the 4 Overview and 4 Fundamental videos) or new Interactive Tutorials with model files. After the required files are added to the Interactive Tutorial folder, they appear in the Welcome screen and the Get Started tab.
Principal Content Developer