Inventor 2012 has been announced and you’ve probably seen various press reports on some of the new features. Inventor 2012 also a lot of new functionality in the API. You can find a presentation of what’s new in the API, along with some samples on the http://www.autodesk.com/developinventor website. An updated object model chart is also available there.
There will also be a live showing of this presentation on April 7th, where I’ll be going through the same presentation you can download above. It’s free and you can sign up for the webcast at ADN Course Schedule page. Look for the class titled “DevDays Online: Inventor 2012 API updates” and click the “Register” link.