A new beta tool has been released on Autodesk Labs which allows you to annotate a part file within the modeling environment. This may be a handy tool for quickly communicating design intent from a designer to a drafter or dropping into a design review presentation. If you make widgets at your company, you could technically use this tool to bypass the whole drawing creation step. Check it out for yourself here: http://labs.autodesk.com/utilities/inventor3da/
Not really sure why, but the addin is only available in Australia, Canada, Ireland, New Zealand, Singapore, United Kingdom, and United States.